... , R38, T38, T45, T51 etc.) Retrac Button bits with different Thread different diameters. 2. Dth bits: From 115mm, 120mm, to 165mm ... , DHD360, DHD380 Cop34, Cop44, Cop54, MACH30, MACH40, MACH50, MACH60 etc4 Tapered Drill RodShank h22x108mm, (6, 7, 11, 12 degree taper) , Length ... can be according to customers requests. 5 Thread Drill RodR22, R25, R28, R32, R38, T38 etc, lenth can ...