The Rotozip Direct Drive cut-off attachment is specially designed for making difficult cuts in tight spaces. High performance cutting wheels spin 50% faster than a conventional 4-1/2" angle grinder for lightning fast cut-offs. The wheels have 50% greater cutting capacity than a standard rotary tool for greater versatility and longer wheel life. Quickly cuts through steel, copper, or plastic with a 3/4" cutting depth. Cast aluminum guard provides safety against sparks and debris.