Irwin Hanson 316015 15-Piece Cobalt Steel Drill Bit Set

The Irwin Hanson 316015 is a professional-grade 15-piece cobalt drill bit set engineered for drilling tough metals and abrasive materials. Constructed from premium M-42 high-speed steel with 8% cobalt content, these bits deliver exceptional durability and heat resistance when working with stainless steel, cast iron, and other hard metals.

Key Features:

• M-42 cobalt high-speed steel construction provides superior abrasion resistance and extended bit life
• 135-degree split point tip design reduces walking and requires less feed pressure for faster, cleaner penetration
• Self-centering split point prevents work hardening of material during drilling
• Durable impact-resistant case with rubberized sides protects bits during transport and storage
• Sliding latch mechanism ensures secure case closure

Set Includes: Two each of 1/16", 3/32", and 1/8" bits, plus one each of 5/64", 7/64", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8" sizes for versatile drilling applications.

Ideal for metalworking professionals, fabricators, and serious DIYers who demand reliable performance when drilling hardened materials.