... ,Top-hammer drilling tools including thread button bits(R25,R28,R32,R38,T38,T45,T51, ST58, ST68, GT60), coupling, taper rods ... and bits, Speed rods/MF rods, extension rods, shank adapter, etc2,DTH drilling tools including Air ... , IBO anchor system( anchor rods, anchor bits, nut, plate,coupling.), Rebar rock bolting, Friction bolting. etc. DTH Drilling pipe