4-1/2", x-lock segmented rim, diamond blade, fixed mount & high quality materials, features snap on mounting & a wheel release lever on grinder, segmented rim diamond blade designed for fast universal rough cuts in pavers, soft brick & concrete block, fast cutting quality diamonds embedded in an optimized pattern, steel core delivers straight smooth cuts with less wobble, backward compatible with standard 7/8" arbor mounts, application focused designed specifically for use with angle grinders, quality manufacturing features high quality materials for durability.