Dry matte belt box, sand belt wear-resistant sand, sand cloth soft, nylon fabric on the back, anti-stretch. Can be cut to the required length at will, so as not to cause unnecessary waste. Suitable for fine grinding and polishing of metal, aluminum copper, hardwood, synthetic materials, etc. Boxed four volumes, four sizes: 150#, 240#, 320#, 400#,each roll size: 25mm x 6m. Weight: 450g Size: 130mmx93mmx93mm Material: nylon cloth backing