... Barrel, Casing Tube, Overshot Assembly,Hosting Plug, Drill RodNQ HQ Core Barrel, Casing Tube, Overshot Assembly,Hosting Plug, Drill Rod ... back and the inner tube disengages itself from the barrel. 1.5m and 3.0m length core barrels are avaiable. Wireline ... Core Barrel available:Q series Core Barresls: AQ, BQ, NQ, HQ, PQ, NQ3, HQ3T series Core Barrels: T2-56, T2-66 ...