Diamond PCD Cup Grinding Wheels are excellent for surface preparation and for removing surface coatings including epoxies, mastic, and glue. The PCD cup wheel leaves the surface clean and ready for grinding preparation. Our Diamond PCD Cup Wheels feature top-quality diamonds, a 5/8-11 threaded arbor, and are available in 4″, 4.5″, 5″, 6″, and 7″ sizes. At Cost Cutting Blades, we sell only the most rigorously tested, high-quality diamond cup wheels. If we wouldn’t use the wheels ourselves, we won’t sell them. We offer a 100% satisfaction guarantee on all of our diamond wheels. If you’re not happy with your purchase for any reason, we’ll return your money, no questions asked.