1.high strength,high resistance of stamping; 2.strong hardness; 3.abraision resistant; 4.high quality,flexible price. It is made of hard alloy:tungsten steel,with high hardness and strong abrasion resistance. It has good quality. It is made of cemented carbide,with high hardness and strong abrasion resistance. Here provide RD30,RD50,RD30,FD15,FD25. High hardness:86-93HRA which is equal to 69- ...