Drill Hulk 17/64-Inch Cobalt M35 Jobber Length Twist Drill Bits – Pack of 6 for Hard Metal & Stainless Steel

Powerful cobalt drill bits for hard metals

Drill Hulk 17/64-inch cobalt drill bits pair a high-speed steel core with 5% cobalt to create tools that hold an edge longer and resist heat buildup during demanding drilling tasks. With an overall length of 4-1/8 inches and a flute length of 2-7/8 inches, these bits feel confident when starting through thick materials, helping you maintain control and accuracy from first cut to finish.

Designed for tough metalwork, the 135-degree split point helps begin holes cleanly with minimal wandering, while the 3-flat shank reduces slipping in standard drill chucks. This six-pack comes in a protective case, so you can store, transport, and access them quickly in a busy shop or on site.

Key benefits you may notice

• Hard metal compatibility: well suited for drilling in hard metals, including stainless steel, with a steady bite.
• Improved heat resistance: cobalt content helps keep the edge cooler under heavy use.
• Re-sharpening flexibility: the uniform alloy enables sharpening multiple times without compromising edge geometry.
• Durable construction: a robust combination of HSS and cobalt supports longer service life in demanding tasks.

Real-world use cases

Imagine fabricating metal brackets, mounting plates, or automotive components where strong metals require precise hole placement. You’ll notice smooth starts, reduced wandering, and cleaner holes when you pause to let the drill do the work with steady feed pressure. The included case keeps your bits organized so you can grab the right size quickly on a busy workbench.

Product details

• Cutting diameter: 17/64 inch
• Flute length: 2-7/8 inch
• Overall length: 4-1/8 inch
• Point geometry: 135-degree split point
• Shank: 3-flat design
• Material: high-speed steel with 5% cobalt
• Includes: 6 pieces with case

Care and sharpening: to extend life, cool the bit during sharpening, maintain the original geometry, and avoid overheating. Sharpen only as needed to restore the cutting edge; inspect for any chipping and replace as necessary. When not in use, store in the provided case to protect edges and prevent rust.