5133-01-474-4980 Aircraft quality, heavy duty cobalt high speed steel bits for use in constant speed drills. Cobalt drills maintain their cutting ability at higher temperatures which is common in drilling harder materials. Recommended for use in the following types of steels: high strength alloy steels, stainless steel, titanium, manganese steel, armor plate and steel. These bits feature 135° split points with straight round shanks for easier drill starting without the need for center punching. The bits are oxide surface treated, right hand cutting and have two flutes.
- Type D-Straight shank, Jobbers length (short). Features (40) number sizes from 1 to 40 provided in an indexed metal case.