The Irwin M-35 cobalt reduced shank drill bit features a 3/8" shank that fits standard 3/8" drill chucks while delivering a 1/2" hole. Built with 5% cobalt alloy for superior heat and abrasion resistance in tough metals.

• M-35 cobalt alloy steel (5% cobalt) for maximum hardness
• 135-degree split point starts on contact and reduces walking
• 3/8" reduced shank fits standard 3/8" drill chucks
• Heavy duty web construction for added strength
• Gold oxide finish for corrosion resistance
• Drills hardened steel, stainless steel, titanium, and super alloys
• 1/2" diameter x 6" overall length, 3-1/4" flute length