3M Easy Change Floor Surfacing Discs feature a HookIt II backing for easy changes and better grip on buffer pad. Discs are sharp, fast cutting, tough, and have a flexible paper backing, while offering a better value, better finish, and long life. 3M Resinite Floor Surfacing Discs are precut. Sharp, fast cutting synthetic mineral with a tough, flexible paper or combination backing. These discs save time and deliver a better value, better finish, and longer life. 7010375180 - 00051131997646