H x6" HSS Aircraft Extension Drill Bit 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..
Ideal for portable or machine drilling. #17 HSS Heavy Duty Split Point Stub Drill Bit Screw machine drills (also know as stub or stubby drills) are manufactured to National Aerospace Standard 907.