Best Spline Core Drill Bits of 2025
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Spline core drill bits are powerful and efficient tools that are widely used in construction and renovation projects. These drill bits have a unique design that allows them to drill through tough materials like concrete, brick, and stone with ease. They are made from high-quality materials and feature a durable spline shank that provides a secure and stable connection to the drill. Spline core drill bits come in a variety of sizes and shapes, making them suitable for various applications. They are ideal for creating large holes for pipes, cables, and ventilation systems, and for creating precise openings for anchors and fasteners.
At a Glance: Our Top Picks
#TOP 1
9.8
#TOP 2
9.7
#TOP 3
9.5
Top 10 Spline Core Drill Bits
Core Drill Adapter for Core Bits
This Core Drill Adapter is designed for use with core bits and comes with a 1-1/4"-7 male to spline drive. Note that it should be used on rotary mode only and not on hammer mode. It falls under the category of core drill bits.
BOSCH 8 In. Spline Core Bit Adapter
The BOSCH 8 In. Spline Core Bit Adapter is a German-made tool designed for use with Bosch 2 piece core bits and other compatible systems. The adapter features a spline shank and is 8 inches in length, making it a versatile and reliable addition to any core drill bit collection.
Irwin 325004 Masonry Core Bit
The Irwin Masonry Core Bit is designed for strength and efficiency. Its one-piece construction enhances durability, ensuring it withstands tough jobs. The carbide cutting teeth on the cup provide excellent performance, allowing you to drill through hard materials with ease. Additionally, the carbide-tipped pilot bit helps with precision, guiding the core bit accurately for cleaner holes. With its universal spline shank, you can easily attach it to various drill types, giving you flexibility in your projects. This core bit is perfect for anyone looking to tackle masonry work effectively.
Milwaukee 48-03-3565 Core Bit Adapter
The Milwaukee Core Bit Adapter is designed for your convenience and efficiency. This tool is incredibly user-friendly, making it easy for you to operate, regardless of your experience level. Built to last, it offers exceptional durability, ensuring you can rely on it for various projects over time. With an impressive length of 18 inches, it allows you to work with core bits ranging from 1-1/2 inches to 6 inches, giving you the flexibility to tackle different tasks. Manufactured in Japan, you can trust its quality and craftsmanship, making it a valuable addition to your toolkit.
Hitachi 984029 Spline Shank
Hitachi Spline Shank is a 9-inch long adapter that converts spline shanks to fit 3-piece core bits of 1-3/8 inches or larger. This heavy-duty core bit system is compatible with Spline and SDS-Max rotary hammers, making it versatile for various drilling tasks. It works seamlessly with Hitachi's 3-Piece Core Cutter Bit models, ensuring quality consistency in your drilling projects. With a 30-day limited warranty, this well-built and simple design tool is ideal for use with rotary hammers, offering durability and reliability for your core drilling needs.
Spline DD-BU to 1-1/4" M Core Bit Drill Adapter
The Spline DD-BU to 1-1/4" M Core Bit Drill Adapter by BLUEROCK Tools Model #9 is designed to fit HILTI spline style drills. The adapter has a solid all metal construction with a 1-1/4" 7unc male threaded end that fits BLUEROCK wet type core bits and other compatible threaded coring bits. The adapter is sold separately from the 2.5" core bit, which is shown for scale purposes only.
Core Drill Bit Adapter for Hilti DD750/DD250/DD400
Global Diamond Pros Adapter is an essential tool for your Hilti core drill models DD750, DD250, and DD400. This adapter allows you to easily connect core drill bits with a SPLINE DD BU to a 1-1/4" male thread, making it compatible with various drilling machines. Engineered from durable hot heavy metal treatment, this adapter ensures a secure fit for all standard 1-1/4" thread core bits. With this adapter, you can efficiently tackle drilling tasks with precision and ease.
BLUEROCK Spline DD-BU to 5/8" M Core Bit Drill Adapter Model #5
BLUEROCK Core Bit Adapter Model #5 is a versatile tool that allows you to connect Spline (DD-BU) style drills to 5/8" 11unc Male Threaded core bits. The solid all-metal construction ensures durability. This adapter is compatible with BLUEROCK Wet type core bits and other threaded coring bits. It does not include the 2.5" Core Bit. By using this adapter, you can easily switch between different core bits for your drilling needs, making your drilling tasks more efficient and convenient.
Milwaukee 12 Inch Spline Core Thin Adapter
The Milwaukee 48-03-3540 Spline Core Thin 12 Inch Adapter is an easy-to-use and durable product that is manufactured in Japan. It has a 12-inch length and is suitable for 1-3/4 inch to 6-inch core bits. This product falls under the category of Core Drill Bits.
DEWALT DW5930 1-3/4-Inch Core Bit
The DEWALT Core Bit DW5930 is designed to enhance your drilling experience. Its alternating tooth design increases durability and helps you center the bit quickly, making your work more efficient. The tool-free centering bit allows for easy removal, saving you time and effort when switching bits. With a low friction core body, you can expect faster drilling speeds, allowing you to complete tasks quicker. Additionally, its one-piece construction offers superior durability compared to traditional two-piece designs, ensuring that this core bit stands up to tough jobs.
Frequently Asked Questions (FAQs)
1. What is a spline drill bit?
The Spline shank bits are carbide-tipped bits used for drilling holes in concrete, brick or block base material. The tip of the bit is made out of carbide. The Spline drive carbide-tipped bits are used in electro-pneumatic hammer drills.
2. What is the difference between SDS and spline?
Spline bits have become much less common than SDS Plus or SDS Max. They are very similar in capacity and variety to the range available to SDS Max bits. The major difference is that chipping bits and drilling bits that are used for spline drive drills have different shanks as one is smooth and the other has splines.
3. What are the 5 types of drill bits?
Drill bits are designed to drill holes in a variety of different common materials. These include different types of wood, metal, plastic, ceramic tile, porcelain and concrete.
4. What are the best core bits?
If you want quality core drill bits, my top pick is the Bluerock 1-Inch to 6-Inch Core Bit Set, which is made for longer materials. The Binota SDS Plus Concrete Hole Saw Set has good packaging while the Bosch SDS Max Rotary Hammer Core Bits has a special design that maximizes energy transfer.
During our spline core drill bit research, we found 24 spline core drill bit products and shortlisted 10 quality products. We collected and analyzed 4,103 customer reviews through our big data system to write the spline core drill bits list. We found that most customers choose spline core drill bits with an average price of $98.36.
The spline core drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of spline core drill bits, including EDiamondTools, Bosch, IRWIN, Milwaukee, Hitachi. The seller of top 1 product has received honest feedback from 164 consumers with an average rating of 4.7.
Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.