Walter SST+ 35/64 Cobalt Prentice Drill Bit with 1/2 Shank

Precision and Power: Walter 35/64" SST+ Cobalt Drill Bit

Tackle the toughest drilling applications with confidence using the Walter 01M535 35/64" SST+ Prentice Drill Bit. Engineered for the professional metalworker, this tool combines advanced metallurgy with smart design to deliver superior results in stainless steel, mild steel, and non-ferrous metals. The bit is part of Walter's renowned SST+ series, known for its ability to drill more holes between sharpenings than conventional bits. The secret lies in the robust cobalt blend construction, which provides exceptional red hardness, preventing the cutting edges from dulling prematurely when exposed to high frictional heat.

One of the standout features of this model is its 1/2-inch reduced shank equipped with three flats. This "Prentice" configuration is a game-changer for operators using standard 1/2-inch chucks. It allows you to bore a 35/64-inch hole without needing specialized heavy machinery. The three flats on the shank serve a critical safety and performance function: they ensure the chuck jaws grip the bit securely, preventing the tool from slipping or scoring the shank during high-torque drilling operations. This positive grip translates to more efficient power transmission and cleaner, more accurate holes.

The geometry of the 01M535 is designed for speed and accuracy. It features a quick-starting point that eliminates the need for center punching, allowing for immediate penetration. The heavy-duty web geometry adds structural rigidity, reducing the risk of breakage when breaking through the backside of the workpiece. Whether you are working in a fabrication shop, performing on-site maintenance, or operating a magnetic drill, the Walter SST+ Prentice drill bit offers the reliability and performance required for industrial-grade metalworking.