Walter 01M559 59/64 SST Prentice Drill is a heavy-duty, large diameter drill bit designed for portable drills, drill presses, and magnetic base drills with 1/2″ chuck capacity. Made with a cobalt blend, it offers superior durability, faster drilling, and extended service life. The extra-hard tip ensures more holes can be drilled between re-sharpenings, making it ideal for demanding applications.
Features:
- Premium cobalt HSS alloy for drilling harder materials with ease.
- 135° self-centering split point reduces thrust requirements and prevents walking.
- Drills approximately 30% faster than standard HSS drill bits.
- Special bronze SST surface treatment enhances lubricity and extends tool life.
- 1/2″ reduced shank fits standard chucks for large-diameter drilling.
- 3-flats shank design minimizes slippage in drill chucks.
Benefits:
- Delivers cleaner, more accurate holes with less finishing work.
- Extended tool life reduces downtime and replacement costs.
- High drilling efficiency in heavy-duty and industrial applications.
- Reliable performance in portable and stationary equipment.
Technical Specifications:
- Model: 01M559
- Type: SST Prentice Drill Bit
- Diameter: 59/64″
- Point Angle: 135° self-centering split point
- Shank: 1/2″ reduced shank with 3-flats
- Material: Premium cobalt HSS alloy
- Surface Treatment: Bronze SST for extreme lubricity and long life
- Applications: Portable drills, drill presses, magnetic base drills








