Extremely flexible and comfortable that it is easily shaped to sand both concave and convex contoured surfaces and can even be folded in half to sand in tight crevices. Specially useful for sanding moldings spindles, turnings and railings. For sanding of wood, paint, filler, metal, plastic, fiberglass, ceramics, drywall compound, spackle and anywhere traditional sandpaper is being used. Aluminum Oxide Sanding Sponge Can be used wet or dry. Can be washed and reused. Foam sanding pads are ergonomic comfortable and convenient. Flexible to sand edges, corners and grooves Very Fine (180 Grit)