4-1/2″ (114.3mm) x 1/16″ (1.59mm) c24r-bf type 1 masonry cutting wheel with 7/8″ (22.22mm) arbor. silicon carbide and dual fiberglass reinforced. used primarily on ceramic, masonry, plastic and other non-ferrous materials. quality made to provide fast, safe, dependable service. designed to be used on right angle grinders only. iso 9001 certified. wheel size: 4-1/2″ thickness: 1/16″ arbor: 7/8″ spec: c24r-bf max rpm: 13,580 tool type: right angle grinder