01M542 - Walter SST+ 21/32" Cobalt Prentice Drill Bit with 1/2" Shank

Heavy-Duty 21/32" Drill Bit for Stainless & Steel

For welders and fabricators, drilling large holes in the field often means lugging around heavy equipment or struggling with bits that slip and dull instantly. The Walter SST+ 21/32" Prentice Drill Bit (01M542) changes the game by allowing you to drill large diameter holes using your standard portable drill with a 1/2" chuck. This bit is built to tackle the toughest metals you encounter on the job site, including stainless steel, mild steel, and aluminum, without burning out or snapping under pressure.

One of the biggest frustrations in metal drilling is the bit spinning inside the chuck when the going gets tough. Walter has solved this with a secure 3-flat shank design that locks firmly into your drill, ensuring 100% power transmission to the cutting edge. The bit is crafted from a special cobalt blend that resists high heat, meaning you can drill more holes before having to stop and resharpen. This is a massive time-saver when you are up on a lift or in a tight spot and need the tool to just work.

The SST+ also features a unique point geometry that bites into the metal immediately. You can say goodbye to walking bits and the extra step of pre-drilling pilot holes. It even performs exceptionally well on round surfaces, such as pipes and tubing, making it an essential addition to any pipe welder's toolbox. With its bronze surface treatment reducing friction, this bit runs cooler and smoother, giving you a clean hole every time.