core barrel of BQ NQ HQ PQ, include core lifter,lifter ... wide range of drilling tool including drill rod, wireline core barrel (AQ-PQ) and assemblies, synthetic diamond core bits, natural ... BW, NW, HW casing tube: BW, NW, HW, HWT2.Core barrel: BQ,NQ,HQ,PQ , head assembly and assembly 3.AQ ... overshot, outer tube & inner tube wrench, foot clamp,etc. Core Barrel BQ NQ HQ PQ and assemblies for wireline