Bullet_point: ['"Supersize" lubricant helps cut faster and cooler for an improved workpiece finish, and extends the life of the abrasive', '3-ply laminate disc for an aggressive cut, as the rigid construction provides durability and long life', 'Advanced self-lubricating grain treatment for reduced heat and loading on hard-to-grind materials', 'Ceramic aluminum oxide is a self-sharpening grit that is harder, tougher, and lasts longer than aluminum oxide', 'Ceramic grain constantly exposes sharper edges to deliver highest productivity', 'Fast stock removal, weld blending, and deburring rates', 'Improved resin bond system maximizes grain retention for longer product life', 'Price For: Each Backing Weight: Y Series: R980 Abrasive Type: Coated Item: Quick Change Disc Abrasive Material: Ceramic Backing Material: Cloth Color: Orange Grit: 50 Attaching System: TR Max. RPM: 20, 000 Attachment Type: Roll-On/Off Grade: Coarse Disc Dia.: 3" Country of Origin (subject to change): United States', 'TR discs have threaded central hubs that require two-and-a-half turns and mount to Norton TR or 3M Roloc TR back-up pads', 'Used with a molded rubber or foam backing pad (sold separately)'] (Page 1)