Boart Longyear™ core lifter cases are made of a high-quality alloy steel that is specially heat treated to increase strength, toughness, and wear life. Available in Q™, QTK, Q-P, Q3, and QTT models. The specialized Q-P/QTT core lifer case works with Q-P/QTT bits to route fluid flow to the cutting face – further improving core recovery.