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 iron, steel, alloy steel, stainless steel, carbon steel, aluminum, copper and other metals, as as non-metals such as marble, bone, jade, etc., and the processing hardness can reach 85.The durability is that of high-speed steel knives and small grinding wheels.The processing efficiency is 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 are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.