1 Piece High Carbide Tire Repair Bit. The cutter head is made of high carbon steel alloy, which has the characteristics of high hardness, strong wear resistance and heat resistance.It can process cast iron, cast steel, alloy steel, stainless steel, carbon steel, aluminum, copper and other metals, as well as non-metals such as marble, bone, jade, etc., and the processing hardness can reach HRA85.The durability is several times that of high-speed steel knives and small grinding wheels.The processing efficiency is several times higher than that of manual files and small grinding wheels with shanks.The processing quality is good and the finish is high. Various high-precision mold cavities can be processed.Colour:As shownMaterial:Tungsten steelSize:4.5mmPackage Contents:1 x drill bitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.