... ,T38,T45,T51, ST58, ST68, GT60), coupling, taper rods and bits, Speed rods/MF rods, extension rods, shank adapter, etc2,DTH ... and Chevron types with "API Reg", "NRod" thread.Claw tybe bits, Clay bits,etc4,Diamond core drilling tools including the diamond core bit ... .5,Rock anchor tools, IBO anchor system( anchor rods, anchor bits, nut, plate,coupling.), Rebar rock bolting, Friction bolting. etc. Drill ...