Best Round with Flats Jobber Drill Bits of 2025
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Round with Flats Jobber Drill Bits are high-performance drill bits designed for use on a variety of materials, including metal, wood, and plastic. These bits feature a unique design with a round body and flattened sides, which helps to prevent slipping and allows for better control during drilling. Made from high-speed steel, these drill bits are durable and long-lasting, and they come in a range of sizes to suit any job. Whether you're a professional contractor or a DIY enthusiast, Round with Flats Jobber Drill Bits are an essential tool for any toolbox.
At a Glance: Our Top Picks
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Top 5 Round with Flats Jobber Drill Bits
Norseman Super Premium Magnum 29 Piece Drill Bit Set
The Norseman Super Premium Magnum 29 Piece Drill Bit Set includes Type 190-AQF Premium Ultra-Dex Bully with 135 degree split point and jobber length. Its three flats shank comes in an orange case, made of high molybdenum steel, and coated with gold and black oxide. This drill bit set is perfect for jobber drilling tasks.
Drill America 29 Piece Cobalt Drill Bit Set
The Drill America Cobalt Drill Bits set features gold stepped point technology that allows you to start drilling effortlessly and achieve faster results. These bits are ideal for enlarging existing holes or creating new, smooth holes in various materials like acrylic, steel, and brass. With a 135-degree cutting angle and a special shank design, you can expect better control and reduced spinning while you work. The set includes a range of inch sizes, making it versatile for different projects, so you’ll always have the right size on hand.
Drillco 350N Series Nitro 15 Piece HSS Mechanics Length Drill Bit Set
The Drillco 350N Series Nitro 15 Piece High-Speed Steel Mechanics Length Drill Bit Set offers a combination of hardness and toughness for wear resistance for general purpose applications. The gold oxide surface treatment is thinner than black oxide and reduces slippage with three-sided flats shank. The spiral fluted tools evacuate chips up and out of the cut to reduce clogging, and the set includes 15 screw machine length drill bits ranging in size from 1/16" to 1/2" in 1/32" increments.
Drill America KFD 25/64" Drill Bit Set
The Drill America KFD Drill Bits are designed for a variety of drilling tasks, especially in tough materials like stainless steel. Their high-speed steel construction provides a perfect balance of strength and durability, ensuring they can withstand wear over time. The gold and black surface treatment enhances their performance in hard metal applications. With a unique three-flat shank, these bits minimize slippage in drill chucks, making your drilling experience more efficient. Additionally, the spiral flute design helps clear chips from the cut, preventing clogging and allowing for smoother operation.
Drill America D/A3F High-Speed Drill Bit
The Drill America High-Speed Bit is designed for versatility and efficiency in various applications. Made from high-speed steel, this drill bit combines hardness and toughness, ensuring durability while you work on different materials. Its black oxide finish not only enhances lubricity but also helps keep coolant close to the cutting edge, improving performance. The round shank design allows compatibility with various toolholding systems, providing you with more options. Additionally, the spiral flute design effectively removes chips from the cutting area, reducing the risk of clogging and ensuring a smoother drilling process.
Frequently Asked Questions (FAQs)
1. What is a jobbers drill bit?
Jobber drills are the most widely used type of drill in industry for drilling cylindrical holes. Generally they come with two spiral flutes, straight (or parallel) shanks and an overall length which varies with diameter.
2. What are flat drill bits called?
Spade bits are flat, with a centering point and two cutters. The cutters are often equipped with spurs in an attempt to ensure a cleaner hole. With their small shank diameters relative to their boring diameters, spade bit shanks often have flats forged or ground into them to prevent slipping in drill chucks.
3. What is a jobber length bit?
A jobber drill bit has a long length compared to its diameter. The length of the flute is between 8-12 or 9-14 times the diameter of the drill, depending on the drill specifications. For example, a 1/2″ diameter jobber drill will be able to drill a 4-1/2″ deep hole because it is 9 times the diameter in length.
4. What is the difference between jobber length and mechanics drill bits?
Jobber length drill bits are the most common and have a longer length compared to the diameter of the shaft. They are commonly used in softer materials such as wood, soft metals or composite. A mechanics length drill bit is a bit that has a shorter overall length, as well as a shorter flute length.
During our round with flats jobber drill bits research, we found 24 round with flats jobber drill bits products and shortlisted 5 quality products. We collected and analyzed 5,962 customer reviews through our big data system to write the round with flats jobber drill bits list. We found that most customers choose round with flats jobber drill bits with an average price of $44.77.
The round with flats jobber drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of round with flats jobber drill bits, including Norseman, Drill America, Drillco. The seller of top 1 product has received honest feedback from 750 consumers with an average rating of 4.9.
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.