Sizes 1/16' thru 1/2'. Sizes 25/64' thru 1/2' have 3/8' reduced shank. PILOT POINT tip starts on contact for clean accurate holes and reduces lock-up on breakthrough. No-Spin shank eliminates the frustration of bit spinning in the chuck. Tapered web provides greater durability to reduce breaking. Size markings are located above the shank to prevent them from wearing away. Packaged in a tough case.