Diablo's diamond rimmed metal cut-off discs provide extreme durability, minimal downtime, increased productivity. These diamond rimmed discs deliver 100X longer cutting life versus a standard bonded cut-off disc in some of the most intense metal cutting situations. The disc's long-lasting durability maximizes cutting even in extreme applications such as rebar, angle iron, cast iron and steel bar. Designed to be backwards compatible, these discs work with X-LOCK angle grinders and 7/8" arbor angle grinders when grinding and polishing metal materials.