... service life DTH drill rods1,Top-hammer drilling tools including thread button bits(R25,R28,R32,R38,T38,T45,T51, ST58, ST68 ... Step and Chevron types with "API Reg", "NRod" thread.Claw tybe bits, Clay bits,etc4,Diamond core drilling tools including the diamond core ... .5,Rock anchor tools, IBO anchor system( anchor rods, anchor bits, nut, plate,coupling.), Rebar rock bolting, Friction bolting. etc. ...