uxcell Grinding Cylindrical Tungsten Carbide Rotary File 5/128" x 5/16" Product Name : Rotary File;Design : Cylinder Shape, Double Cut Cutting Size : 1 x 8mm / 5/128" x 5/16" (D*L);Shank Diameter : 3mm / 3/25" Total Length : 38mm / 1.5";Material : Tungsten Carbide Color : Gray;Weight : 2g Package Content : 1 x Rotary File