... tools, such as impregnated/ surface-set diamond core bit, diamond casing bit, diamond casing shoe ... Thin Wall Bit, core lifter, core lifter case, Core Barrels, etc.The Geotool Core Barrel is a precision ... formations.Size available:Q series Core Barresls: AQ, BQ, NQ, HQ, PQ, NQ3, HQ3T series Core Barrels: T2-56, ... T2-66, T2-76,T2-86, T2-101, T6-131 T Series Core Barrel ...