JSDRILL High Pressure Mine Drilling rig DTH Hammer DHD/MISSION/QL/SD 3-24 INCH dth hammer for quarry pit mine drilling $600.00 Min. order: 1 piece JSDRILL DTH Hammer Rock Drill Bit Manufacture Drill Bit for Mining Drilling Blasting $110.00 Min. order: 1 piece R25 R28 R32 T35 T38 long ...