This is a standard replacement sander backing pad for the most common orbital sander with 5" dia, 8 dust holes and 4 screw holes, such as Ryobi RS290, RS241, RS240, RS280/RS280VS, RS281VS, P411, Milwaukee 6021-21, 6034-21, Craftsman 315.112170, 315.116940, 315.116950, 315.112180, 315.279870 Random Orbit Sander.
NOTICE: Screws and washers are not included.
Hassle-free and attaches easily.
The black pad has thickened harder backing, better cushion rubber and denser hook than the original.