01M548 - 3/4 Inch SST+ Cobalt Prentice Drill Bit with 1/2 Inch Shank

Industrial Grade 3/4" Drilling Solution

The Walter 01M548 3/4" SST+ Prentice Drill Bit represents the pinnacle of drilling efficiency for industrial maintenance and fabrication environments. Engineered by Walter Surface Technologies, this bit is specifically designed to bridge the gap between heavy-duty capacity and portable convenience. The "Prentice" style design features a reduced 1/2-inch shank, allowing operators to utilize a large 3/4-inch cutting diameter within standard 1/2-inch chucks found on most portable power drills and drill presses. This eliminates the need for specialized heavy machinery for common large-hole applications.

Durability is at the core of the SST+ line. Manufactured with a proprietary cobalt blend, this drill bit offers exceptional heat resistance and hardness, making it uniquely suited for tough materials such as stainless steel and other ferrous alloys. The addition of a bronze SST surface treatment further enhances performance by reducing friction and facilitating smoother chip evacuation, which keeps the bit cooler during extended operation. This thermal management is critical for maintaining the temper of the cutting edge and extending the overall lifespan of the tool.

Operational precision is ensured through Walter's exclusive point geometry. The bit features a self-centering tip that bites into the material immediately upon contact, effectively eliminating the "walking" often associated with large drill bits. This means users can bypass the time-consuming step of center punching or pilot drilling. Furthermore, the shank is machined with three distinct flats. These flats lock into the chuck jaws, providing a positive drive that prevents the bit from spinning or slipping under high-torque loads, ensuring safety and protecting the equipment from damage.