3M 8″ STIKIT BACKUP PAD FOR CHICAGO PNEUMATIC MODEL 777 AND NATIONAL-DETROIT MODEL 900 SANDERS – Specially designed for use with 3M Stikit discs. Vinyl pad face provides excellent adhesion and easy removal of the abrasive disc. Pad is lightweight, durable and well balanced. For use with 8 inch diameter Stikit™ discs to shape plastic filler. Attaches with 5 mounting holes. Fits National Detroit 900 and Dynabrade Model 57700. MOS: 1,500 RPM. Pad is 3/8″ thick with a 15° edge.