11/16" SST+ Cobalt Prentice Drill Bit with 1/2" Shank

Drill Bigger Holes with Your Standard Drill

Fabricators and welders know the struggle of needing to drill a hole larger than their chuck can handle. The Walter 11/16" SST+ Prentice Drill Bit (01M544) solves this problem with its reduced shank design. By stepping down the shank to a standard 1/2-inch diameter, this bit allows you to drill 11/16" holes using your existing 1/2" chuck hand drills or drill presses. It is the perfect solution for field repairs, truck frame modifications, and general fabrication where dragging out a heavy mag drill isn't feasible.

Built tough for the shop environment, this bit uses a cobalt blend material that stands up to the heat generated when drilling hard metals like stainless steel. Unlike standard high-speed steel bits that dull quickly, the SST+ maintains its cutting edge longer, saving you money on replacements and time on sharpening. The bronze SST surface treatment further aids in performance by acting as a lubricant to prevent chips from welding to the flutes.

Slipping bits are a thing of the past with the Walter 01M544. The shank is ground with three flat sides, ensuring a positive grip in your drill's jaws. This means maximum torque transfer to the cutting edge, allowing you to power through thick plate and structural steel with confidence. With its self-centering tip, you can skip the center punch and start drilling immediately, even on round stock or uneven surfaces.