The DEWALT high performance metal grinding wheel is a professional solution for a range of grinding applications. The grinding wheel is made with tested high performance aluminum oxide for long life and high material removal and full sheets of fiberglass for durability and safety. DEWALT developed a proprietary material mix to maximize the wheel's lifespan and help you minimize tool replacement costs. With a high grain concentration, you are assured of aggressive grinding action and smoother running wheels, no matter what the job.