Diablo's diamond continuous rim masonry cut-off discs provide extreme durability, minimal downtime, increased productivity. These diamond rimmed discs deliver 4X longer cutting life versus a standard diamond cut-off disc. The disc's industrial-grade diamonds with hardened disc body delivers lasting durability and maximizes cutting quality in hardened materials even in extreme applications. Designed to be backwards compatible, these discs work with X-Lock angle grinders and 7/8 in. arbor angle grinders.