... ,tapered,drilling tools,drill bit,drill bits,rock drilling tools 1. Button bits: Tapered button bits (28mm, 30mm 32mm, 34mm, 36mm ... DHD360, DHD380 ets. ) , Cop Hammers series (Cop34, Cop44, Cop54 etc.) , HD hammer series, Mach hammer series (MACH30, MACH40, MACH50, MACH60 etc) 3 ... MACH60 etc4 Tapered Drill RodShank h22x108mm, (6, 7, 11, 12 degree taper) , Length can be according to customers requests. 5 ...