DEWALT 4-1/2 Inch Cut Off Wheel Aluminum Oxide Metal Cutting Disc Grinder
Temper Point aluminum oxide grain bonds tightly to the resin for a slower-wearing edge, so you replace wheels less often and keep cutting. Two sheets of fiberglass run through the wheel body, adding strength where cheaper wheels tend to crack or shatter.
DEWALT 4 1/2 Cut off Wheel, Angle Grinder Cutting Disc, 5 Pack, Aluminum Oxide A
They have a proprietary aluminum oxide grain combination for aggressive cutting action and the proprietary material mix ensures durable long life wheels. They have 2 full sheets of fiberglass for durability and user safety.