Walter 01M539 39/64" SST 135° 1/2" Prentice Drill Bit
SST 1/2" Prentice are heavy-duty large diameter drill bits for use in portable drills, drill presses and magnetic base drills with 1/2" chuck capacity. Their extra hard tips allow for the drilling of many more holes between re-sharpenings. They are made with a cobalt blend for longer life.
- Drill Size: 39/64"
- Flute Length: 3-1/8"
- Overall Length: 6"
- For high tensile steel, fits in a 1/2" chuck
- 3 flats on shank prevent slippage inside chuck
- Drill more holes, faster
- Exclusive point geometry eliminates pre-drilling
- Special bronze SST surface treatment
