... tools,drill bit,drill bits,rock drilling tools 1. Button bits: Tapered button bits (28mm, 30mm 32mm, 34mm, 36mm, 40mm, 42mm, 44mm ... R22, R25, R28, R32, R38, T38, T45, T51 etc.) Retrac Button bits with different Thread different diameters. 2. Dth bits: From ... , for example: DHD Hammers series (DHD340, DHD350, DHD360, DHD380 ets. ) , Cop Hammers series (Cop34, Cop44, Cop54 etc.) , HD hammer series, Mach ...