Rodman's Green Meanie Diamond Blades unique concentrated diamond crystals are permanently brazed to the blade body, allowing for fast and consistent cuts throughout the blade life. She'll out-last abrasive wheels 50-60 times longer, and retains her original size! Enhanced user-experience includes explosion-proof performance, substantially less dust then abrasive cut-off wheels, infrequent need for blade changes, and most of all, will cut all ferrous metals, masonry products, wood, plastic, even the kitchen sink! Use on 4”, 4 ½” & 5” Angle Grinders.