Lenox 4-1/2 In. MetalMax Diamond Blade features premium European industrial diamonds expertly bonded to a durable steel core with a proprietary brazing compound, making it i for metal cutting applications. This blade exceptional longevity, lasting up to 30 times longer than traditional bonded abrasive blades. Its robust steel plate resists breakage and maintains diameter retention, which enhances safety during use. Designed to improve efficiency by reducing the need for frequent blade changes, it also promotes cleaner air for a better workspace environment. With a 4-1/2 inch diameter, segmented rim type, and compatibility with angle grinders, this blade is optimized for dry cutting at speeds up to 13,200 rpm. The edge thickness of 0.050 inches ensures precision and durability for all your metal cutting needs. Model Number: 1972921