585-30520 Features: -8pct Cobalt for higher heat and abrasion resistance.-135 split joint begins drilling immediately, minimizing bit "walk".-Tough metal drilliing, including heavy-duty abrasive alloy metal drilling on hardened steel (heat-treated).-Cutting Diam: 5/64 in, 7/64 in, 5/32 in, 1/4 in, 19/64 in.-Cutting Edge Material: HSS.-Spiral Angle: CCW.-Structure: Solid.-Type: HSS Drill Bit Set.-Quantity: 5 per set.-Price is for 1 Set. Includes: -Includes: Pouch. Construction: -Heavy-duty web construction for strength and durability. Color/Finish: -Finish: Black Oxide.