Disston 287766 Master Mechanic 31/64 Inch By 5-7/8 Inch High Speed Black Oxide Bit

31/64 inch x 5-7/8 inch, high speed steel black oxide drill bit, jobber length, 3/8 inch shank, 135 point angle with 4 cutting edges eliminates walking & provides fast penetration, black oxide tempering treatment reduces frictional resistance & improves chip flow, recommended for wood, plastic, wallboard, plywood, soft metals, aluminum, brass & bronze, for occasional use in stainless steel & other hard metals, carded.