01M561 - Walter SST+ 61/64-Inch Prentice Drill Bit with 1/2-Inch Shank

Heavy-Duty Industrial Drilling Performance

The Walter 01M561 SST+ Prentice Drill Bit is engineered for professionals who demand precision and durability in their metalworking operations. With a substantial diameter of 61/64 inches, this bit is part of the renowned SST+ series, known for its ability to tackle the toughest materials, including stainless steel, mild steel, and non-ferrous metals. The drill bit is constructed from a premium cobalt blend, which provides exceptional heat resistance and wear life compared to standard high-speed steel bits. This material composition allows the bit to maintain its cutting edge longer, even under the high thermal stress generated when drilling large-diameter holes.

Designed for versatility, the 01M561 features a reduced 1/2-inch shank, making it compatible with a wide range of equipment, from portable hand drills to stationary drill presses and magnetic base drills. A critical feature for industrial safety and efficiency is the inclusion of three flats on the shank. These flats ensure a positive grip within the chuck, effectively preventing the bit from spinning or slipping during high-torque applications. This secure fitment protects both the tool and the workpiece, reducing downtime and maintenance costs.

Efficiency is further enhanced by Walter's exclusive point geometry. This advanced design allows the drill to self-center immediately upon contact with the material, eliminating the time-consuming steps of center punching or drilling pilot holes. The special bronze SST surface treatment facilitates smooth chip evacuation and reduces friction, ensuring a clean, accurate hole every time. Whether used for maintenance, repair, or fabrication, the Walter SST+ Prentice Drill Bit delivers reliable, heavy-duty performance.