Review on High-Quality Replacement Pad for DeWalt DWE6423/6423K, DWE6421/6421K, DCW210B Sanders - 5-Inch Hook and Loop Metal Backing - DWE64233, N329079, RSP54 Compatible by Fisseha Rodgers

OK not to say it will work with my Ryobi Sander 290 but looking at the photos of this back cover I noticed square notches in the middle between each one the screw hole looked almost a match so I took a risk as I couldn't find a metal backing to match, anyway I made a few velcro cuts where the screws went, screwed in the first screw (top) and used it a few turns to the Rotate the stop, then insert the 2nd screw (bottom) directly opposite, then tighten the last 2 screws (left and right). what i did and my experience