The Epiroc Pit Viper PV-231 surface blasthole drill delivers application flexibility, fuel-efficient performance and enhanced safety with outstanding operator comfort and ease of maintenance. The PV-231 can be configured for a wide variety of single-pass rotary and down-the-hole (DTH) drilling operations. Its 53-foot single-pass capability can improve drilling efficiency by up to 25 percent by eliminating rod change time while also lowering total cost of operation with the patented Hydraulic Clutch.