Drill Hulk 9/32-Inch Cobalt Drill Bits – M35, Jobber Length, Pack of 6

Performance that stands up to hard metals

When you work with stainless steel and other hard alloys, you need a drill bit that can endure heat and maintain a sharp edge. The Drill Hulk 9/32 inch cobalt drill bits are made from M35 cobalt steel with 5 cobalt, designed to deliver steady cutting power as heat builds. This set includes six bits in a durable case, making it easy to keep your toolkit organized and ready for metalworking tasks.

In practical use, the cobalt formulation offers enhanced heat resistance while the bits retain a uniform hardness throughout the material. That combination helps you sustain edge strength during drilling and makes surface finishes more consistent, especially when drilling through tough metals. Re sharpening is possible without compromising the cutting edge, thanks to the consistent material hardness.

Key benefits

• Higher heat tolerance and red hardness due to cobalt alloy, helping maintain cutting power through tough materials.
• Uniform hardness throughout the bit enables repeated sharpening without edge damage.
• 135 degree split point produces a clean start with less walking on contact.
• 3-flat shank reduces slipping and improves tool grip during operation.
• Jobber length and overall reach provide capability for deeper holes in metal workpieces.

A quick at-a-glance spec sheet

• Diameter: 9/32 inch; flute length: 2-15/16 inch; overall length: 4-1/4 inch
• Material: high-speed steel with 5 cobalt; grade: M35 cobalt HSS
• Quantity: 6 pieces; packing in a protective case

Real-world use and tips

These bits excel when drilling hard metals, including stainless steel, especially when paired with appropriate feeds and speeds. Start with a pilot hole to guide the bit, apply steady pressure, and monitor temperature to prevent overheating. The bits are designed for repeated use and can be sharpened as needed to extend their life.

Care and maintenance

Store in the provided case to protect the cutting edges from nicks and corrosion. Use cutting fluid or lubrication as appropriate to optimize performance during metal drilling tasks.