3M Bumpon(tm) polyurethane material allows a smoother grind & a refined polish - for use with the finer grade abrasive - such as Trizact™ or Diamond. Mount between the Backpad and the abrasive, reduces vibration for a more perfect finish. Also excellent for working curved surfaces. For use with JoolTool(tm) and Ninja See-thru backpads and adhesives. Sold in packages of 3.

Made in China. (Pack of 3)