... drilling tools and drilling rigs are used in varied environments and situations.Excellent quality and reasonable price. Product DescriptionCore drilling rig, mud pump, diamond drill ... , T2 76, T2 86, T2 101, T6 131, T6 146...., ) B. Reaming shells/reamer (AQ, BQ, NQ, HQ, PQ, BQ3, NQ2 ...