?Quantity?10pcs Solid Double Cut Carbide Rotary Burrs file Die Grinder Bits, Shank diameter: 6.35mm (0.25 inch) with 1/4 inch shank for most die grinder drill
?Durable?Machined from new raw tungsten carbide, hardness can reach to < HRC85, sharp and durable
?High Quality Processing? High degree of finish, can produce a variety of high-precision mold cavity
?Usage?Carbide rotary drill file is widely used in metal products, tool manufacturing, engineering, model construction, woodcarving, welding, chamfering, casting, deburring, grinding, cylinder head transplant and engraving
?Shapes Included?Ball shape, Cylinder shape, Flame shape, Oval shape, Tree shape radius end, Taper shape-Radius, Cylindrical radius end