The S473 Best for Contour is repeatedly washable and reusable. It features strong sponge edges for edge sanding. Furthermore, it is coated on all four sides with abrasive grit resistant to grit breakout. The abrasive sponge is available in 3 colors denoting various grit sizes for different sanding steps. It is solvent free. The S473 Best for Contour offers easy handling when hand sanding various surfaces and contours. It is conveniently color coded for efficient distinction between the remove, repair and finish sanding steps. Furthermore, the abrasive sponge’s foam base provides a comfortable grip for hand sanding. It is highly flexible and adapts perfectly to the work-piece for effective material removal. The S473 Best for Contour isintended for sanding work on wood and paint. It is apt for keying wood, plastic or metal prior to painting, and for the intermediate sanding for varnishes and paints. It is also ideal for sanding in rebates and light curves as well as fine sanding filler material.The S473 Best for Contour is suitable for hand sanding.