Pads are made of tough, nonwoven synthetic material that will not rust, splinter, or shred like steel wool. Conforms to flat or contoured surfaces. Pads rinse clean for repeated use. Use cleaning and stripping pad with stripping chemicals to remove paint, varnish, oil, and stains. Use metal finishing pad to remove light rust, tarnish, and paint. Use wood finishing pad for smoothing bare wood, scuffing old paint before repainting, and de-nibbing between top coats.