Drill Hulk 1/4-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits – Pack of 12

Overview

When working with hard metals, you want drill bits that persist through heat and stay sharp. Drill Hulk combines high-speed steel with 5% cobalt to deliver dependable performance in stainless steel and other tough alloys. The 1/4-inch cutting diameter, 4-inch overall length, and 2-3/4-inch flute length give you a balanced reach for through-holes and deeper cuts, while the included carry case keeps the set organized between projects.

What makes these bits stand out

• 1/4-inch cutting diameter, 2-3/4-inch flute length, 4-inch overall length
• 135-degree split point for easier starts and reduced walking
• 3-flat shank for a secure grip in standard chucks

Durability and sharpening

The cobalt alloy boosts red hardness, helping the bit resist softening under heat. Because the cobalt is uniform throughout the material, the edges can be sharpened repeatedly without compromising cutting geometry.

• Repeated sharpening without edge damage
• Suitable for hard metals, including stainless steel
• Maintains consistent geometry for reliable cuts over time

What’s in the pack

Includes 12 pieces of 1/4-inch cobalt drill bits, neatly organized in a sturdy carry case for easy transport and storage.

Real-world uses

Ideal for metal fabrication, auto maintenance, and equipment servicing tasks where stainless steel and hard alloys are involved. Expect clean entry, steady progress, and a confident drilling feel in demanding environments.

Care and tips

• Sharpen when needed to extend bit life, following proper tooling procedures
• Use steady feeds and adequate lubrication to minimize heat buildup