ITEM NAME:10pcs Tungsten Steel Grinding Head Milling Cutter Rotary Bit Carbide Sharp Burrs Product Description 10pcs/set Tungsten Steel Grinding Head Set Car.10Pcs/Set Tungsten Steel Grinding Heads. It can replace small grinding wheel with handle on a large part of the work, and without dust pollution. Material: Tungsten Steel. The product has good processing quality, highly polished, and can produce high precision various shapes mould.