... of grinding carbide, various molds, stone, glass, jade, precious stones, and so on Diamond grinding barThe product has characterist of high precision, fast ... , various molds, stone, glass, jade, precious stones, teeth, bones and all kinds of high-ideal for hard and brittle materialsProduct specifications: A10A15 A20 ... D1.5 D2 D2.5 D3 DZ30B RZ30S RZ33 LA210 Diamond grinding bar