100% original materail longer life circle, Good price and sevrice. Various type or customize. Long life,Good Wear Resistance,Excellent toughness,any grade with different grain size are available.We specialize in the manufacture of tungsten carbide products such as tungsten carbide strips,rods,rings,inserts,shims,wear parts,drawing dies,drilling bits,cold forging deies,bars,balls,burrs,PCD blades, ...