AQ, BQ, RQ, NQ, HQ, PQ drill rod;AWJ,BWJ,NWJ drill rod;RW,EW,AW,BW,NW,HW drill rod;RX,EX,BX,NX,HX,PX drill rod Our drill rod with high quality alloy steel, and heat-treated. Can supply different drill rods to meet different Core bits. Size Available:"Q" Series: BQ, NQ, HQ, and PQ."WJ" Design: AWJ, BWJ, NWJ, KWJ, HWJ"W" Design: RW, EW, AW, BW, NW, HWMetric Series: 33, 42, 50We also can produce ...