1 PC-Master Mechanic 120097 Black Oxide Jobber Length Drill Bit 7/16 x 5-1/2

Lasts 3X longer than high speed drill bits. 135 point angle with 4 cutting edges which eliminate walking and provide fast penetration. Black oxide tempering treatment reduces frictional resistance and improves chip flow. Recommended for wood plastic wallboard plywood and soft metals aluminum brass and bronze. For occasional use in stainless steel and other hard metals. Master Mechanic; Size: 7/16 x 5-1/2 ; Material: high speed steel; Jobber length; 3/8 shank; Lasts 3X longer than high speed drill bits; 135 point angle with 4 cutting edges which eliminate walking and provide fast penetration; Black oxide tempering treatment reduces frictional resistance and improves chip flow; Recommended for wood plastic wallboard plywood and soft metals aluminum brass and bronze; For occasional use in stainless steel and other hard metals; Carded.;