... standard Q,T series Impregnated diamond core bitsCore BarrelSpecificationOutside Set Diameterlnside Set DiameterMaximumMinimumMaximumMinimumlnchesmmlnchesmmlnchesmmlnchesmmAQ1 ... core bit,surface set diamond core bit,reaming shells, impregnated diamond casing bit, casing shoe bit, diamond reaming shell ... , corelifter, corelifter case, diamond sub-adapters, hoist plugs, tap, etc.LD diamond core bit ...