... 34mm, 36mm, 40mm, 42mm, 44mm and so on with different degree taper)Tapered Rod (Rod 19mm, 22mm, ... Rod 19mm, 22mm; Shank hex. 19mm, 22mm)Thread Button Bits (33mm, 35mm, 45mm ,51mm,57mm,64mm ... ,76mm, 89mm, 102mm ,115mm,127mm and sodifferent degree Thread for example: R22, R25, R28, R32, R38, ... 32mm, 38mm, 45mm, 51mm)Retrac Button bits with different Thread different diameters. (51mm, 64mm,70mm,76mm,89mm, ...