These 24 inch black stripping pads are typically used with a propane floor stripping machine. They come 5 pads per case, and are used for stripping wax off of commercially tiled floors. Each pad is 1" thick and is constructed from polyester fibers and synthetic abrasives. We recommend using one of our water based floor stripping solutions to remove worn and soiled floor finishes or sealers with these pads. Please take a look at our complete line of floor stripping pads for other sizes, if these are not exactly what you're looking for.