... 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, ... R28, R32, R38, T38, T45, T51 etc8. Shank AdaptorsShank adaptors-carburized and manufactured with tight tolerances and controlled straightness. Drill bit