Sintered diamond burs for dental laboratories, especially for ceramic and jewelries material. Detailed Product Description: 1.Shank size: 2.35mm(3/32" inch) 2.Three different grit: 80#, 120#, 170#(Coarse, Medium, Fine) 3.Shapes:001,014,041,068,111,141,165,172,198,199,263,273,304,274 4.D iameter of the head:030;040;050;060;070;080;090;100. 5. Suitable composite kits with silicon polish,carbide burs We also can produce according to your drawing.