This is one of the most innovative sanding tools in the world. This sander can be manipulated to conform to many shapes and contours. It’s really an “all-in-one” sander for those hand sanding projects. This works with regular or PSA sandpaper. When using the adhesive sandpaper, just peel the old stuff off and stick the new stuff on. This will wash up without deterioration of the rubber, which also makes it ideal for wet sanding applications too. 5” Length and 2” Diameter.