The DEWALT® 5 In. x 1/4 In. x 5/8 In. 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 3 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.