OEMTOOLS feature image

OEMTOOLS

Review rating Review rating Review rating Review rating Review rating 4.6 Fact checked

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

When purchasing a product, price is the consumer's primary concern. At present, OEMTOOLS has 306 products for sale. OEMTOOLS products range in price from $5.99 to $139.99, and the average price of all the products is about $48.98.

We found that most of the OEMTOOLS products are manufactured by GreatNeck Saw Manufacturers and Great Neck Saw Mfg. Inc.. The manufacturers provide OEMTOOLS with a steady supply of products, and they have a good cooperative relationship with each other.

You can confidently purchase OEMTOOLS products from the seller Mobile Distributor Supply. The brand holds an average rating of 4.6, testifying to its excellent reputation.

OEMTOOLS Best Sellers

Last Updated: Jan 8, 2026

OEMTOOLS No-Spill Coolant Funnel Kit, 15 Piece Fluid and Oil Funnel Set, Allows Access To Hard-To-Reach Radiators

Prevents Spills: The no spill coolant funnel kit prevents spills and eliminates air bubbles during radiator refills, making it perfect for a clean, hassle-free coolant flush job.
Versatile Adapter Compatibility: Includes 5 direct-fit radiator adapters, making it a versatile no spill funnel coolant kit. This radiator funnel burping kit prevents spills and trapped air during refills.
Reach Tight Areas: Features a 45° angled adapter and 5-inch extension for accessing tight or awkward filler necks. This coolant filling funnel kit ensures precise and easy coolant and oil refills.
Clean Refills: The integrated fluid stopper prevents drips when removing the funnel, keeping your workspace clean. Ideal coolant bleeder kit for your next coolant change.
Complete Funnel Kit: This no spill radiator funnel kit includes 4 cap adapters, 5 filler neck adapters, 3 extensions, a fluid stopper, and a transparent spill free funnel.

OEMTOOLS 26502 11 Piece Multi-Purpose Razor Blade Scraper, Window Scraper, Sticker Scraper Tool, Flat Blade Scraper, Plastic Razor Scraper

10 Blades Included: With other scrapers, you may only get one blade; Our plastic scraper includes 10 blades, 5 single edge razor blades and 5 plastic safety blades; You can save money while doing a variety of jobs with this razor blade scraper tool
Uses: Because there are many blades within this kit, there are a variety of projects you can do; This paint scraper tool is ideal for cleaning surfaces, as well as removing paint, stickers, and decals; Always be prepared with this glass scraper
Easy Blade Change: It's easy to change the decal remover blades; Pull the locking switch down, push the blade against a work surface for partial removal, remove it, insert the new blade at the widest part, and push the locking switch up
Easy Storage: Other scraping tools can be cumbersome, and finding a space to store them is a hassle; With this cleaning scraper, storage is easy; Our metal scraper tool has a folding design, so it can even fit in your pocket for easy transport
Store Safely: You never have to be concerned about the safety of this flat razor blade scraper when you are done using it; When you have completed your job, simply fold the OEM scraper and flip the locking clasp to securely hold the handles together

OEMTOOLS 25355 Straight Edge 24", Machinist Tool, Made in USA, Precision Ground ±0.001" for Engine Block Inspections, Cold Rolled Steel Straight Edge

Precision for Engine Work: Use this precision straight edge with a feeler gauge to check for distortion on engine blocks, cylinder heads, flywheels, and more. Its ±0.001" tolerance ensures accurate inspections.
Cold Rolled Steel: Crafted from 1/4" thick cold rolled steel, this straight edge tool delivers durability and rigidity, making it ideal for machinist tools and automotive inspections requiring a flat surface.
Powder-Coated Finish: The powder-coated finish protects against wear, making it suitable for long-term use in tough environments. Ideal for tasks such as using a cylinder head straight edge tool in engine repairs.
Hang Hole Storage: Includes a built-in hang hole for easy storage in your workshop, ensuring that this precision straight edge is always within reach when needed for critical tasks like scribing or measuring.
Protective Edge Cover: Comes with a reusable protective edge to maintain its accuracy over time, safeguarding the straight edge ruler from damage between uses, making it a trusted tool for machinists and mechanics alike.

OEMTOOLS 24937 Pneumatic/Manual Fluid Extractor, 1.5 Gallon (6L) Oil Extractor Pump, For Coolant, Transmission, and Power Steering Fluid, 2 Dipstick Adapters, 5ft Hose

Efficient Dual Operation: Oil extractor pump for oil change switches between pneumatic and manual extraction to suit the job and workspace. Ideal automotive tools for garages without air supply or use at the vehicle, minimizing downtime.
Cleans Without Removing Plugs: Fluid extractor pump extracts oil, coolant, transmission, and steering fluid through dipstick tubes or fluid openings, avoiding the hassle of removing drain plugs or crawling under vehicles.
Stops Before Overflow: Oil vacuum pump extractor automatic shut-off valve halts suction when the tank reaches capacity, preventing spills and fluid waste while improving workshop safety and cleanup efficiency.
Extended Reach Included: Automotive fluid extractor includes updated 41" dipstick hose adapters and a 5-foot suction hose, offering better access for deeper fluid reservoirs in cars, trucks, and equipment.
Built for Daily Use: Durable, leak-resistant fluid extractor automotive 1.5-gallon tank with oversized pumping handle supports repeated use with water, coolant, gear oil, and more. Fluid evacuator designed for technicians, DIYers, and fleet service.

OEMTOOLS 25429 O Ring and Seal Removal Pick Set, Short and Long Spoon Type Hose and O-Ring Removal Set, Includes 4 Contoured Automotive Picks for Seals, Bushings, Hoses, and O Rings

Why You Need a Tool Set for Removing O-Rings: O-rings are built to withstand enormous pressure; They connect parts and create tight seals throughout your vehicle, but can grow inflexible over time
Designed for the Professional Mechanic: Pick set of 5.5 and 8.5 inch curved o ring picks; Remove difficult seals in hard to reach areas without damaging automotive parts
Versatile Spoon Tip Seal Remover: Each contoured o ring removal tool can function as an all purpose automotive seal puller; Seal removal and install kit for hoses, gaskets, bushings and more
Your Last Automotive Pick Set: The comfortable rubber grip handle, anti corrosion coating and hardened steel construction ensure this rugged automotive seal removal tool lasts repair after repair
The Essential O Ring Removal Tool: O ring replacement is an everyday task for mechanics; Keep your garage equipped with a reliable seal and o ring removal tool kit

OEMTOOLS 23996 Punch and Chisel Set, 11 Piece, Cut, Shape, and Puncture Medium and Soft Metals, Heat-Treated Alloy Steel, Includes Green EVA Organizer Tray

VARIETY OF USES: Our punch tool set comes with all the punch and hand chisel tools you need for repairing or servicing small equipment, machines, and vehicles; These punch set tools are perfect for jewelers, engineers, carpenters, and mechanics
DURABLE MATERIALS: All punch tools in this piece punch set are made with unique alloy steel that is heat-treated for extra strength and longevity; Chrome finish on this hardened steel punch set resists rust and won't show prints
EASY ORGANIZATION: Our tool punch and chisel sets come in EVA Trays that are designed to fit securely in a cabinet or tool box; Trays feature custom cutouts, backed by a Hi-Vis green, for each tool, making it easy to see when a punch tool is missing
CONVENIENT FEATURES: Each hand punch tool in this punch kit has its size clearly marked on it for easy identification; Punch chisel set includes a gauge that shows the correct angle for maintaining chisel edges
PRODUCT SPECIFICATIONS: Three (3) Tapered Punches, 3 Piece Pin Punches, One (1) Center Punch, Three (3) Cold Chisels, One (1) Gauge; EVA Organizer Tray; Unique Heat-Treated Alloy Steel, Hard Chrome Finish

OEMTOOLS 24444 Cooling System Refiller AirEvac Kit, Quickly Refill Cooling Systems, Eliminate Trapped Air, Prevent Engine Damage, Universal Adapter, Leak Test, Includes 5 Bushings & Storage Case

Efficient Cooling System Refill: The OEMTOOLS 24444 AirEvac Kit quickly refills your vehicle's cooling system while effectively eliminating trapped air, preventing engine damage caused by overheating.
Vacuum Leak Testing Capability: Perform vacuum leak tests on your vehicle's cooling system to ensure it's functioning optimally and avoid costly repairs down the road.
Prevents Engine Damage: This innovative tool helps reduce the risk of engine damage from air pockets, making it an essential tool to prevent recurring issues.
Multiple Bushings & Adapters: The kit includes 5 additional bushings and a tapered cone adapter, allowing it to cover a wide range of vehicle cooling systems.
Universal Adapter: The universal adapter provides a secure, airtight seal on most radiator and coolant bottle necks without the need for custom adapters, ensuring a hassle-free experience.

OEMTOOLS 26052 Foldable Magnetic Tray Set, Magnetic Tray for Mechanic's Small Parts, Sorting and Storage, Collapsible, 4-1/2" Square, 2 lb. Capacity, 4 Colors

Expandable Tray Design: Collapsible magnetic parts tray expands to 2 inches deep, holding up to 2 lbs of parts and tools, providing a compact storage solution. Perfect auto magnetic trays to keep lug nuts organized and within reach.
Durable Bolt Tray: Made from high tensile silica, these trays withstand regular use in tough environments, ensuring long-lasting performance for mechanics. Durable, super strong magnetic screw tray keeps your workspace organized.
Strong Magnetic Base: Equipped with a magnetic base, each tray securely holds bolts, nuts, and small tools, preventing loss during repairs. Magnetic bolt tray keeps bolts/nuts organized when disassembling engines, transmissions, or other intricate components.
Color-Coded Organization: Includes four magnetic tray for screws in different colors, perfect for sorting and identifying parts quickly, enhancing efficiency in any workshop or garage.
Versatile Use Cases: Ideal for automotive work, these magnetic bolt holder trays are designed for use in various settings, from professional garages to home workshops. Great screw holding tray for doing projects in the garage.

OEMTOOLS 24389 Manual Fluid Extractor Pump, 1.4 Gallon (5.3L) Oil Extractor Pump Capacity, Use for Oil, Coolant, and Transmission Fluid, 2 Dipstick Adapters, 5ft Hose

Manual Pump Operation: Oil extractor pump for oil change, coolant, or transmission fluid using a hand pump—no electricity or air required—making it ideal for mobile use in garages, driveways, or boat docks.
Works with Dipsticks: Oil pump extractor removes fluid through dipstick tubes using included adapters, eliminating the need to remove drain plugs or lift vehicles, and helping reduce mess and downtime.
Wide Fluid Compatibility: Fluid pump automotive designed for low-viscosity fluids like water, power steering fluid, and gear oil, this extractor supports a variety of vehicles and industrial equipment.
Prevents Overfilling Risk: Manual transfer pump built-in overflow shutoff valve stops extraction once full, protecting the user and workspace from spills, and keeping cleanup minimal.
Extended Hose Reach: Oil transfer pump features a 41-inch dipstick hose for deeper access, supporting hard-to-reach reservoirs in motorcycles, marine engines, and tight engine bays.

OEMTOOLS 87043 No-Spill Professional Quality Coolant Funnel Kit, Easily Fill Antifreeze Coolant Set Includes 5 Adapters, Extensions, and Automotive Funnel, Air Venting, Drip-Free, Green

Quick And Simple: Few automotive tools are this easy to use; Just select the correct adapter, attach the engine coolant funnel, and fill your cooling system without spills
Secure Fit: Radiator funnel set comes with 5 spring-loaded adapters, designed to fit most domestic and import cars and light trucks
Smart Design: Air-release tubes ensure efficient venting during car coolant refilling, preventing trapped air in the system
No Drips: Standard funnels for automotive use can create a mess; The unique stopper design eliminates dripping when removing this car funnel, keeping your workspace clean
Reach Anywhere: This spill free funnel boasts a broad range of applications; Extensions and adapters are included for those hard-to-reach surge tanks

OEMTOOLS 26546 4 Pc Hook & Pick Set – Automotive Seal and O-Ring Removal Tool Kit, Stainless Steel Blades, Acetate Handles, Precision Angles for Cars, Trucks, and DIY

VERSATILE SET: Give yourself a hook and pick tool set that can do it all; The pick set tools' thin stainless steel blades are great for car gasket and hose removal; The fine tips are ideal for positioning wires, removing small fuses, and more
QUALITY RESISTANCE AND DURABILITY: An easily bent pick set automotive tool is worthless; Our mechanic pick is engineered with corrosion resistant stainless steel blades; Use the mechanics pick set's O ring hook to remove small fuses or hoses
EMBRACE COMFORT: Using tool hooks can be a messy process; Our automotive pick set features solvent resistant acetate handles that provide impact resistance for putting power behind the hook pick; Easily remove stubborn gaskets, hoses, and electronics
4 ESSENTIAL TOOLS: Personal and professional tool boxes are made on the versatility and reliability of well crafted tools; This 4-piece hook pick tool set is essential for working with the nooks and crannies of you appliances, vehicles, and more
PROFESSIONAL WORKMANSHIP: Small parts are made accessible in tight spaces with our thin stainless steel blade picks tools set; Remove small fuses, wire plugs, or work on appliances and vehicles with the strength and versatility of our O ring pick set

OEMTOOLS 25265 Caliper Piston Compressor Tool, Brake Pad Spreader, Brake Caliper Compression Tool, Brake Spreader Tool for Use on Domestic and Import Cars and Light Trucks

High Carbon Steel Construction: Brake pad spreader tool crafted from high carbon steel and chrome vanadium steel to resist corrosion, ensuring durability and longevity.
Brake Compression Tool: Ideal for compressing inner brake pads and resetting pistons, with a maximum thread length of 3-1/2". Brake spreader features an ergonomic large knob with a fine thread driver for precise operation.
Versatile Compatibility: Brake spreader tool designed for use on domestic and import cars and light trucks, providing wide compatibility across various vehicle models.
Compact and Strong: Two-piece design adds strength while the compact size allows for easy use in tight areas where c-clamps can't fit, perfect for hard-to-reach brake components.
Perfect for Brake Maintenance: This disc brake pad spreader simplifies brake maintenance tasks, making it easier to replace brake pads and reset pistons efficiently and effectively, ensuring optimal brake performance.

OEMTOOLS 22213 Tool Box Organizer Tray – 10-Compartment Tool Chest Organizer for Parts, Bolts, and Small Tools – Stackable Drawer Tray Design

Compact, Stackable Design: Low-profile tool box drawer organizer fits in shallow toolbox drawers and can be stacked, maximizing your workspace and keeping tools neatly organized
Durable Construction: Made from high-impact ABS plastic, this parts tray is designed for heavy-duty use in demanding garage environments
Rolled Bottom Edges: Bolt tray easily removes small parts like nuts, bolts, and fasteners with the tray's rolled bottom edges, ensuring quick access during repairs
10 Compartments: With 10 compartments of various sizes, this tool organizer tray keeps tools, parts, and accessories separated and easy to find in any job setting.
Ideal for Mechanics: Perfect tool tray organizer for mechanics, DIY enthusiasts, and automotive professionals who need durable, space-saving tools and parts organization solutions

OEMTOOLS 24686 Brake Hub Resurfacing & Cleaning Kit – Removes Rust and Corrosion from Hubs, Rotors, and Lug Studs – Includes 4 Pads and Shank Adapter

Fast Rust Removal: Quickly cleans brake hubs, rotors, and lug studs without disassembly — saves time and prevents uneven rotor seating.
Professional Finish: Restores clean, flat hub surfaces for proper rotor fit and braking performance.
Adaptable to Any Drill: Includes shank adapter for use with standard power drills; low RPM design prevents damage.
Durable Abrasive Pads: Long-lasting non-woven material resists loading and maintains cutting performance.
Complete Kit: Includes 4 cleaning pads and a hub mount adapter — fits cars, light trucks, and SUVs.

OEMTOOLS 22589 Tire Valve Core Tool Set - 2 Piece, Valve Core Tool, Tire Valve Stem Tool, Shrader Valve Remover, Tire Repair Tools, 2 Piece Set

Quick Valve Repair: Easily repair tire valve stems with our valve core removal tool; Service valve cores on cars, trucks, motorcycles, and bicycles with this Schrader valve tool
Made to Last: Durable steel blades on this 2 inch and 5 inch valve core removal set last long; Acetate handles resist solvents
Simple Set: Removing valve cores without the right tire valve tool is hard; This set makes replacing Schrader valve cores easy
Valves Can't Hide: Includes two valve removers; The 5 inch blade of our single head valve core remover easily reaches dually tire stems
Specs: Valve stem core remover set includes 2 inch and 5 inch slotted blades; Acetate handles are easily gripped during greasy repairs

OEMTOOLS 25104 21-Piece Master Ball Joint Press Kit, Ball Joint Puller for Upper and Lower Ball Joints, U-Joints, and Brake Pins, Automotive Tool Kit Compatible with 2WD and 4WD Vehicles

Removes and Installs: Designed to remove and install press-fit upper and lower ball joints on 2WD and 4WD vehicles, this ball joint service kit works effectively on SUVs, light trucks, and more, ensuring precise fitment every time.
Versatile U-Joint Tool: Includes specialized adapters, making it a universal ball joint removal tool and u-joint press kit. This complete ball joint tool works around obstructions on popular makes, saving you time and effort.
Heavy-Duty C-Frame: Built with a heavy-duty forged steel alloy, this c-frame press tool handles the toughest jobs, including truck ball joint press tasks. Ideal for removing seized joints, ensuring long-term durability.
Comprehensive Kit: This 21-piece ball joint service tool kit includes all necessary adapters for removing upper and lower ball joints on GM, Ford, and Chrysler vehicles, making it a go-to for professional and DIY mechanics.
Secure Storage Case: Comes in a sturdy case for easy storage and transport, keeping your ball joint repair kit organized and ready for any job. Perfect for mobile mechanics and shop use.

OEMTOOLS 24938 Pneumatic/Manual Fluid Extractor, 2.5 Gallon (9.5L) Oil Extractor Pump, for Coolant, Transmission, and Power Steering Fluid, 2 Dipstick Adapters, 5ft Hose

Efficient Dual Operation: Oil extractor pump for oil change switches between pneumatic and manual extraction to suit the job and workspace. Ideal automotive tools for garages without air supply or use at the vehicle, minimizing downtime.
Cleans Without Removing Plugs: Fluid extractor pump extracts oil, coolant, transmission, and steering fluid through dipstick tubes or fluid openings, avoiding the hassle of removing drain plugs or crawling under vehicles.
Stops Before Overflow: Oil vacuum pump extractor automatic shut-off valve halts suction when the tank reaches capacity, preventing spills and fluid waste while improving workshop safety and cleanup efficiency.
Extended Reach Included: Automotive fluid extractor includes updated 41" dipstick hose adapters and a 5-foot suction hose, offering better access for deeper fluid reservoirs in cars, trucks, and equipment.
Built for Daily Use: Durable, leak-resistant fluid extractor automotive 2.5-gallon tank with oversized pumping handle supports repeated use with water, coolant, gear oil, and more. Fluid evacuator designed for technicians, DIYers, and fleet service.

OEMTOOLS 25090 Harmonic Balancer Puller Kit, Adjustable 3-Jaw Puller Fits Most Late Model Vehicles, Forcing Screw Fits a 3/8” Square Drive, Includes 4 Forcing Rods

Versatile Vehicle Compatibility: Designed for use with GM, Ford, Chrysler, and Mitsubishi vehicles, this harmonic balancer installer handles tight engine compartments without removing the radiator
Spring-Loaded Jaw Precision: Spring-loaded jaws securely hold legs in place, making it easier to position the pulley puller accurately and reducing setup time for efficient harmonic balancer removal
Multiple Forcing Rods Included: Harmonic balancer puller kit includes four forcing rods (4", 5-13/32", 6-1/2", 7-13/32") for versatile use across different engine setups, ensuring the right fit for various applications
Engine Damper Kit: This kit works seamlessly as a crankshaft pulley removal tool, making it ideal for removing engine dampers and crank pulleys with precision and ease
Durable, Portable Storage Case: Comes with a sturdy, organized case, making it easy to transport and store your pulley puller set, ensuring your tools are always protected and ready to use

OEMTOOLS 24412 Digital Tire Inflator with Tire Pressure Gauge, Digital LCD Display, 0 to 175 PSI Air Pressure Gauge for Tires with 21” Hose and Clip-On Air Chuck

Accurate Digital Pressure Gauge: Ensure precise tire inflation with a digital tire gauge accurate to +/-1.2 PSI up to 58 PSI, helping prevent TPMS warnings and saving time during routine tire maintenance.
Wide Measurement Range: Measures tire pressure from 0-175 PSI (0-12 bar) and supports four units of measure (PSI, bar, kPa, kgf), making it versatile for various tire types, including cars, trucks, and heavy-duty vehicles.
High Air Flow Efficiency: The 21" rubber hose with a clip-on air chuck with pressure gauge allows for quick inflation, improving technician efficiency and ensuring even tire pressure with minimal effort.
Easy To Read: The backlit tire pressure gauge with inflator LCD display offers easy readability in any light, while the oil-resistant anti-shock rubber housing provides durability for professional use in demanding environments.
Low Battery Indicator: Equipped with a low battery indicator and powered by 2 AAA batteries, this digital air pressure gauge ensures you never run out of power in critical moments on the job.

OEMTOOLS 200cc Small Fluid Extractor and Filler Pump – Precision Vacuum Pump for Brake Fluid, Power Steering, Coolant, and Small Oil Jobs – Dual-Scale Cylinder, Extension Tubes, Serviceable Design

PRECISION EXTRACTION FOR MICRO-SYSTEMS: Designed for controlled fluid removal and filling in tight, hard-to-reach reservoirs — ideal for brake fluid, power steering fluid, coolant overflow tanks, and small oil adjustments.
SMOOTH, LOW-EFFORT PUMP ACTION: Engineered for easy, low-resistance pumping that delivers strong vacuum without fatigue. Perfect for quick, repetitive micro-extractions.
COMPACT 200cc SIZE FOR TIGHT AREAS: Small cylinder fits where larger extractors can't — enabling clean, accurate work in compact engine bays, motorcycles, ATVs, and small equipment.
CLEAR DUAL-SCALE CYLINDER FOR ACCURATE MEASUREMENT: Easy-to-read markings let you monitor fluid levels and transfer volumes precisely during maintenance and system topping.
INCLUDES EXTENSION TUBES FOR HARD-TO-REACH PORTS: Flexible tubing and narrow adapters give access to reservoirs, dipstick tubes, and tight components without spills or contamination.

OEMTOOLS FAQs

Yes, OEMTOOLS is a legitmate brand on Amazon. After conducting a comprehensive analysis of 20,902 customer reviews for OEMTOOLS products on Amazon, we have determined its average rating. With a strong performance and good quality, OEMTOOLS has received an average rating of 4.6 from numerous buyers, indicating that OEMTOOLS are trustworthy and live up to their claims. Therefore, it is safe to make purchases from OEMTOOLS on Amazon.

Amazon has strict policies and safety measures in place that ensure only legitimate sellers and products are allowed on their platform. It also provides a secure payment gateway and offers buyer protection, ensuring your transaction is safe. In the unlikely event that there's an issue with your purchase, Amazon's customer service and return policies are designed to protect your interests.

If you're interested in OEMTOOLS and want to find more OEMTOOLS products, you can follow the steps below:

  1. Go back to FindThisBest's homepage.
  2. Type OEMTOOLS in the search box and hit Enter to see the search results.
  3. Find and click the correct OEMTOOLS to go to the new page.
  4. Select the products you want in the OEMTOOLS buying guide, and take a glance at the prices and features of the products.
  5. View the products interest you on Amazon to read the customer reviews and check the ratings. Besides, you can hit the "brand" to find more OEMTOOLS products.

We analyze millions of OEMTOOLS products reviews and customer reviews to recommend the best picks for most consumers. We have a professional team with decades of experience to test the products, which can help ensure that we provide our readers with accurate advice and best recommendations.

There are usually 5 to 10 products in a brand buying guide. We found 306 OEMTOOLS products for sale, 20 of which were analyzed in detail and recommended to customers.

  1. Go to the OEMTOOLS page.
  2. Select the product you want in the OEMTOOLS buying guide, and then view the product on Amazon. For example, if you are interested in the top 1 product OEMTOOLS No-Spill Coolant Funnel Kit, 15 Piece Flu..., you can view it on Amazon page.
  3. Place your order on Amazon.

Most of the OEMTOOLS products are produced by GreatNeck Saw Manufacturers and Great Neck Saw Mfg. Inc.. The manufacturers provide OEMTOOLS with a steady supply of products, and they have a good cooperative relationship with each other.

Our mission is to provide you with the most up-to-date and objective information about the OEMTOOLS products, helping you make more informed buying decisions. We recommend best choices of the products from the OEMTOOLS brand, helping you make better shopping choices with less time and energy.