DMADS0450 Diablo 4-1/2 in Diamond Segmented Cut-Off Discs for Masonry Cutting Masonry Diablo's diamond segmented masonry cut-off discs provide extreme durability and longer life in concrete, concrete with rebar, brick and cinder block. These diamond rimmed discs deliver up to 2X longer cutting life versus standard diamond cut-off discs. The disc's industrial-grade diamonds with hardened disc body delivers lasting durability and maximizes cutting quality in hardened materials even in extreme applications. Taller segments containing superior quality diamonds along with an ultra-durable bond to the disc body for up to 2x longer life Hardened disc body absorbs vibration and increases impact resistance to deliver superior quality cuts in hardened materials Optimized diamonds segments and diamond distribution lead to constant diamond exposure for maximum performance in high speed cutting applications Compatible with 7/8”, 20mm and 5/8” arbors Includes two bushings: 20mm and 5/8” For dry and wet cutting Max RPM of 13,280 ARBOR : 7/8 in, 20mm, 5/8 in DIAMETER : 4-1/2 in KERF : 2.2mm MAX RPM : Hex 13280 RIM DESIGN : Segmented