US PRO Tools 7pc 6mm Carbide Burr Set Burrs Tungsten Steel Hole enlarger 2630

Double diamond cut Tungsten carbide burr's not HSS like cheaper models. Burrs range from 54mm - 66mm in length while the diameter is 10mm at their widest. 6mm / 1/4" shank. For use to grind most steel types, glass, plastics, marble/granite and various...