Features and Benefits: The versatility of Roloc with the premium quality of Green Corps Generally used for hard to reach areas in paint, rust and weld removal Handy quick change tool for disc grinding which fits any standard 1/4 drill or air tool Quick 1/2 turn on, 1/2 turn off speeds disc changing and cuts down time Color coded; Black button Discs Per Box: 25.... More Abrasive backing type: cloth; Abrasive backing weight: YF weight; Abrasive mineral type: Aluminum Oxide; ANSI grade: 24; Color green; Diameter: 2"; Primary trademark name: Green Corps 3M 1398