Pro-Lok – 5/16″ x 5″Safe Drill Bit – Tungsten Carbide

The 5/16” x 5” in. Safe Bit features a special 7.9 mm Tungsten Carbide tip with a unique negative rake angle and a shortened chisel edge that increases it’s effectiveness and reduces tip failure. Each PRO-LOK® Butter Bit is diamond ground for razer sharpness to withstand the rigors and temperatures a locksmith may encounter when drilling hardplate for entry into a safe.