Strip or scuff a wood surface in your business before refinishing it with the  20" sand screen disc! This disc measures 20" in diameter, and its 80 grit rating means it's suitable for medium sanding to prepare bare wood for finishing or to gently remove varnish and paint. Its durable, open weave construction is designed to prevent clogs from saw dust and other shavings, and each disc is made of waterproof resin and abrasives for consistent, long-lasting use.