Drill rig is designer for down the hole (DTH) drilling with 4-6 1/2" hammers using 3 to 3 1/2" drill pipe 3000 mm long.Drill rig is designer for down the hole (DTH) drilling with 4-6 1/2" hammers using 3 to 3 1/2" drill pipe 3000 mm long.Hydraulic pressure 280 bar with 230 liters per minute, Rotating head: Danfoss OMT 160, Engine Deutz BF4M1013 Diesel Engine produces 104 kW, Hydraulic operated support legs in 4 corners to stabilize machine in place for deep drilling, ... ** we were unable to make drill/ arm functions work ** seller provided features **