A terrific value at almost half the price of 6 individual sponges! Each sponge features medium grit on one face and edge, while the opposite face and edge has fine grit. Flexible core conforms nicely to turnings, moldings and other non-flat surfaces. They also work well on flat surfaces, especially between coats of finish, where a harder block would sand through the finish. Ideal for light to moderate sanding of wood, paint, metal, plastic and drywall. Each sponge measures 2-3/4"W x 4"L x 1" thick.