Industrial Quality Finishing Pads are the alternative to steel wool – one that will never rust. The Red and Grey are impregnated with aluminium oxide and the Grey has a Carbide abrasive for fast cut. The durable, 3-dimensional nylon web resists tearing, shredding and loading, giving a longer life. These are British Made Industrial Quality Finishing Pads and should not be confused with the janitorial quality found in the cheaper brands of pads.