3M Wetordry Sandpaper is a high quality abrasive paper that is ideal for sanding between coats, fine finishing or polishing metal, varnish and painted surfaces. The silicon carbide mineral is bonded to its backing paper with waterproof resin, meaning that it can be used wet to reduce heat build-up and dust levels. If the paper becomes clogged, simply rinse it in clean water and re-use. The result is wetordry sandpaper that gives an improved rate of cut, increased life, flexibility and a uniform, consistent finish. The pack supplied here contains 4 sheets of Ultra Fine P600 grit Wetordry Sandpaper ideal for fine finishing, polishing car bodywork and achieving an ultra smooth surface. Each sheet measures 230mm x 280mm. 3M Wetordry Sandpaper can be used on metal, varnish and painted surfaces. Applications include sanding metal surfaces prior to applying primer or paint; sanding between coats of paint or varnish; fine finishing; polishing; burnishing old finishes and feathering fine edges. 3M and Wetordry are trademarks of 3M Company.