13/64"x12" HSS Aircraft Extension Drill Bit, Overall Length: 12" Sizes smaller than 1/16 and #52 have the 118 degree standard point. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow. The 135 degree split point is self-centering and reduces thrust..
Black oxide high-speed steel drill bits are a dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families..
Z HSS Black Oxide Jobber Length Drill Bit Ideal for production, maintenance or portable drilling jobs. Surface treated with abrasion-resistant black oxide..