Walter SST+ 33/64" Cobalt Prentice Drill Bit with 1/2" Shank

Heavy-Duty 33/64" Bit for Standard Drills

Stop struggling with burnt-out bits and slipping shanks. The Walter 01M533 SST+ Prentice Drill Bit is built to handle the toughest jobs in your shop or on the truck. If you need to drill a 33/64-inch hole but only have a standard drill with a 1/2-inch chuck, this is the tool for you. The "Prentice" design features a turned-down shank that fits perfectly into standard 1/2-inch chucks, allowing you to drill larger holes without upgrading your power tools. Whether you are working on truck frames, structural steel, or heavy equipment repairs, this bit delivers the performance you need.

What sets the Walter SST+ apart is its rugged construction. Made with a special cobalt blend, these bits are designed to eat through stainless steel and mild steel without overheating or snapping. The extra-hard tips stay sharp longer, meaning you drill more holes per bit and spend less time at the grinder sharpening. The bronze surface treatment helps the bit run cooler and smoother, ejecting chips fast so you can keep working.

One of the biggest annoyances with large drill bits is the shank spinning in the chuck when the going gets tough. Walter solved this by grinding three flat surfaces onto the shank. These flats give your drill chuck something to grab onto, guaranteeing zero slippage even when you are leaning into a heavy cut. The unique point geometry also means you can skip the center punch—just line it up and pull the trigger. The bit centers itself and starts cutting instantly. Upgrade your toolbox with the Walter 01M533 and experience the difference of professional-grade cutting tools.