The XP Ultra Performance Ceramic Combo Wheels allow users to Cut-Grind-Notch with one wheel. The wheels feature a premium ceramic grain that provides 56% longer life vs. existing grinding wheels (DWA8904), with fast cutting speeds, and light grinding and notching capabilities that will work well on all steel materials, including stainless. They are manufactured in our facility that is certified to the latest ISO 9001:2015 standards.