... are looking forward to establishing relationships with you in the near future. 2. TCI bits series 1.Tungsten carbide insert bit of ... dolomite, chert, firm sandstone, and firm anhydrite and so on.4.According to your request, all sorts of products can be ... 3/8”),215.9mm(8 1/2”),222.2mm8 3/4”) 241.3(9 1/2”),244.4(9 5/8”),250.8(9 ... 349.2(13 3/4”)374.6(14 3/4”)381(15”),393.7(15 1/2”),406.4(16”)444.5(17 1/2”), ...