DTH bits - Down the hole drilling - SINODRILLS
4'' DTH Hammer bits. DHD340, QL40, MISSION40, SD4 shank. 110mm to 130mm. 5'' DTH Hammer bits. DHD350, QL50, MISSION50, SD5 shank. 134mm tio 152mm. 6'' DTH Hammer bits. DHD360, QL60, MISSION60, SD6 shank. 152mm to 203mm. 8'' DTH Hammer bits. DHD380, QL80, MISSION80, SD8 shank. 203mm to 305mm. 12'' DTH Hammer bits. DHD112, SD12 and QL120 shank
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