Handy and convenient hand sponge for green body finishing. Allows meticulous hand-finishing of casted pieces. Made of top quality pre polymer polyurethane, high performance and long life even in heavy mechanical use as in sanitary ware plants. Giving rapid, high quality and consistent finish. Available type STANDARD (mass density 35 kg) and super affordable type EASY (mass density 31 kg). Measures mm 140x100x60, packed in box of 300 pieces each.