01M563 - Walter SST+ 63/64-Inch Reduced Shank Cobalt Drill Bit

Upgrade Your Drilling Performance with Walter SST+ Technology

Tackle large-diameter holes with confidence using the Walter 63/64" SST+ Prentice Drill Bit (01M563). If you need to drill holes nearly an inch in diameter but are limited by a 1/2-inch drill chuck, this is the solution you have been looking for. The "Prentice" design, often referred to as a reduced-shank or Silver & Deming style bit, steps down the shank size to fit standard 1/2-inch chucks found on most heavy-duty handheld drills and drill presses. This versatility makes it an indispensable tool for welders, fabricators, and mechanics who need to drill round surfaces or enlarge holes in the field without access to heavy stationary machinery.

Drilling through stainless steel and other hard metals can destroy lesser bits in seconds. That is why the Walter SST+ series is crafted with a robust cobalt blend. This material composition allows the bit to withstand the intense heat generated during drilling, maintaining a sharp cutting edge for much longer than standard bits. You will spend less time sharpening or replacing bits and more time getting the job done. The bronze SST surface treatment further aids in performance by reducing friction, which helps the bit run cooler and cut cleaner.

Frustrated by drill bits that slip and spin in the chuck? The Walter 01M563 features a shank with three specially ground flats. These flats align perfectly with the jaws of your drill chuck, providing a rock-solid grip that prevents slippage even when the going gets tough. Additionally, the advanced point geometry eliminates the need for pre-drilling pilot holes. The bit centers itself instantly, saving you a step in the process and speeding up your workflow. From truck frame modifications to structural steel work, this drill bit provides the reliability and aggression needed for professional results.