... and 310mm, The shank can be designed according to different hammer, for example: DHD Hammers series (DHD340, DHD350, DHD360, DHD380 ets. ) , ... Cop Hammers series (Cop34, Cop44, Cop54 etc.) , HD hammer series, Mach hammer series (MACH30, MACH40, MACH50, MACH60 etc) 3. Dth Hammers ... be according to customers requests. 7. Coupling with different thread for example R22, R25, R28, R32, R38, T38, T45, ...