... etc. Including impregnated diamond core bit, surface-set diamond bit, reaming shells, casing bit, casing shoe bit, corelifter, corelifter case, ... core barrel assembly, inner tube head assembly, over shot, hoist plugs, drill rod, ... etc. With ISO certificate & quality control. 1.5m and 3m Drill rod & Casing pipe: Size Available: "Q" series: AQ, ...