The Irwin M-35 cobalt reduced shank drill bit features a 3/8" shank that fits standard 3/8" drill chucks while delivering a 7/16" hole. Built with 5% cobalt alloy for superior heat and abrasion resistance in tough metals like hardened steel, stainless steel, and titanium.

• M-35 cobalt alloy steel (5% cobalt) for maximum hardness and heat resistance
• 135-degree split point starts on contact and reduces walking
• 3/8" reduced shank fits standard 3/8" drill chucks for oversize hole drilling
• Heavy-duty web construction for added strength
• Gold oxide finish for corrosion resistance
• Drills hardened steel, stainless steel, titanium, and super alloys
• Size: 7/16" diameter x 5-1/2" overall length
• Sold individually on a card

Tip: Run at slow, steady speed with cutting oil when drilling hard metals to maximize bit life and prevent overheating. Let the bit do the work -- excessive pressure causes premature wear.