The DEWALT 4-in x 0.045-in x 5/8-in metal and stainless cutting is a professional solution for a range of applications. The wheel is made with high performance aluminum oxide for long life and high material removal and 2 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.