... used in mining and construction. We manufacture rock drill bits and machines used in mining and construction scope ... / 51 / 57 / 64 / 70 / 76 / 89 / 102 / 115 with thread R25, R32, R38, T38, T45, T 51Chisel bitshead 32 ... / 34 / 36 / 38 / 40 / 42 / 43 with socket 22, 24, 25 and the taper 12°, 6°, 7 ... °, 7°Retrac bitshead 51 / 64 / 76 / 89 / 102 with thread R32, R38, T38, T45, T51Coal bitshead 28 / 42 / ...