01M557 - Walter SST+ 57/64 Inch Cobalt Prentice Drill Bit with 1/2 Inch Shank

Reliable Drilling for Tough Metal Fabrication

When you are out in the field or working on a heavy fabrication project, you need tools that work as hard as you do. The Walter 57/64" SST+ Prentice Drill Bit (SKU: 01M557) is built to tackle the challenge of drilling large holes in tough materials without the hassle of specialized machinery. This bit is part of Walter's renowned SST+ series, known for its ability to cut through stainless steel and other hard alloys where lesser bits burn out. The secret lies in its robust cobalt blend construction, which maintains a sharp cutting edge even under high temperatures and stress.

Every welder knows the frustration of a large drill bit spinning in the chuck just when you need to apply pressure. Walter has solved this problem with the Prentice style shank. The 1/2-inch shank is machined with three distinct flats that sit perfectly against the jaws of your drill chuck. This "Secure-Grip" design guarantees that the bit stays put, transmitting maximum torque to the cutting edge. This feature is particularly valuable when using portable drills or magnetic drills on vertical or overhead surfaces, where stability and control are paramount.

Speed up your workflow with the SST+ advanced point geometry. Traditional large bits often require you to drill a smaller pilot hole first to guide the larger bit. The Walter 01M557 features a specialized self-centering tip that penetrates the surface instantly. This allows you to drill your 57/64" hole in a single operation, saving you time on every hole. The bronze surface treatment aids in ejecting chips and reducing heat, ensuring that your bit lasts longer and cuts cleaner. From truck frame modifications to structural steel erection, this drill bit is the dependable choice for professionals who demand quality and efficiency.