... ,T45,T51, ST58, ST68, GT60), coupling, taper rods and bits, Speed rods/MF rods, extension rods, shank adapter, etc2,DTH ... , ODS system, etc3,Drag bits including Step and Chevron types with "API Reg", "NRod" thread.Claw tybe bits, Clay bits,etc4,Diamond core drilling ... .5,Rock anchor tools, IBO anchor system( anchor rods, anchor bits, nut, plate,coupling.), Rebar rock bolting, Friction bolting. etc. ...