NQ, HQ,PQ, NQ3, HQ3 Wireline Core Barrel, Casing Tube, Overshot Assembly,Hosting ... Barrel available:Q series Core Barresls: AQ, BQ, NQ, HQ, PQ, NQ3, HQ3T series Core Barrels: T2-56, T2-66, T2 ... a quotation upon receipt of your detailed requirements. NQ, HQ,PQ, NQ3, HQ3 Wireline Core Barrel