Item: 3016128 Vendor Num: 585-3016128 7/16" drill bit, 2-5/8" shaft. 135 degree split point to minimize walk, 8% cobalt for higher heat and abrasion resistance. Heavy duty web construction for strength and durability. For tough metal drilling, including heavy duty abrasive, alloy metal drilling on hardened steel, cast iron and stainless steel. Carded.