diamond core drills for brick,stone,concrete and aoo sorts of granite and marble wear-resisting longe-lived Cost-effective Diamond core drillsSpecificationsUnit mmTypeDiameterArborSeg .HGSCD1”5/8”-11/M148/10mm1-1/8”5/8”-11/M148/10mm1-1/4”5/8”-11/M148/10mm1-3/8”5/8”-11/M148/10mm1-1/2”5/8”-11/M148/10mm1-3/4”5/8”-11/M148/10mm2”5/8”-11/M148/10mm2-1/4”5/8”-11/M148/10mm2-1/2”5/8”-11/M148/10mm3”5/8”-11/ ...