... thickness :5mm,5.5mm,6mm DTH drill rods1,Top-hammer drilling tools including thread button bits(R25,R28,R32,R38,T38,T45 ... /MF rods, extension rods, shank adapter, etc2,DTH drilling tools including Air DTH hammer,DTH bits with COP, DHD, QL, MACH, MISSION, ... anchor tools, IBO anchor system( anchor rods, anchor bits, nut, plate,coupling.), Rebar rock bolting, Friction bolting. etc. 76mm DTH Drill rod