... grade with different grain size are available We specialize in the manufacture of tungsten carbide products such as tungsten carbide ... ,PCBN blades,ceramic inserts, and customized products etc.In the meantime ,please be informrd any grade and performance are ... is usually made into twist drill,end mill,tap,generic tools etcJGK1488120.514.192.53800Suitable for the hole processing and thread processing , ...