Diablo, 4.5 x 1/16, x-lock masonry cut off blade, type 1, superior performance & increased productivity, premium silicon carbide blend for fast material removal & long cutting life, fully reinforced when working in hard to reach areas, cuts masonry applications such as: concrete brick, cinder block, cement, paver stones, compatible with x-lock & 7/8" arbor angle grinders when cutting metal & stainless steel.