RSUMX Reaming Shells NQ HQ PQ Core Diamond Drill Bit 56mm , 66mm , 76mm RSUMX DIAMOND REAMING SHELL Ultramatrix Product RSUMX DIAMOND reaming shell RSUMX Using Ultramatrix technology, and a new pad design, ROSCHEN has made RSUMX diamond impregnated reaming shells to be the longest lasting available. RSUMX is also available with optional heavy duty blanks and dual pads, making it your first choice in all exploration coring applications. UMX ROSCHEN’s extensive drilling