... all sizes 3:ISO Certificated 4:Long service life DTH drill rods1,Top-hammer drilling tools including thread button bits(R25 ... ,T2,T6,WF,WG,etc), reaming shell, core barrel and drill rods.etc.5,Rock anchor tools, IBO anchor system( anchor ... bits, nut, plate,coupling.), Rebar rock bolting, Friction bolting. etc. Drill pipe