... , 34mm, 36mm, 40mm, 42mm, 44mm and so on with different degree taper) Thread Button Bits (33mm, 35mm, 45mm to 89mm, 102mm and ... , R32, R38, T38, T45, T51 etc.) Retrac Button bits with different Thread different diameters. 2. Dth bits: From 115mm, 120mm, to 165mm ... , 34mm, Length can be according to customers requests. 7. Coupling with different thread for example R22, R25, R28, R32, R38, T38, T45 ...