1/2 X 6 in. HSS Cobalt Drill Bit - 3/8 in. Reduced Shank
Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel. Made from industrial grade High-Speed Steel for increased durability. 8% Cobalt alloy steel is heat and abrasion-resistant. 135-degree split-point tip starts drilling immediately with less force and eliminates in.walking in. across the work surface.