... in good price, best service and on time delivery.18,Many years' experience to insure you the quality and ... 1/2”),222.2mm8 3/4”) 241.3(9 1/2”),244.4(9 5/8”),250.8(9 7/8”)269.8(10 ... .1(12 1/4”),346.0 (13 5/8”),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”),508(20”),558(22”),609.6(24”)660.4(26”) Steel tooth(IADC)111, 121,131117,124, ...