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 in. arbor angle grinders when grinding and polishing metal materials.