The SP600 is a multi-purpose abrasive foam sanding pad that sands old and original paintwork, removes stone chips, scuffs and deep scratches. It can be used to key panels ready for primer applications, prepare e-coat prior to priming and sand primer. The SP600 can also be used on new plastic parts. Cuts like a P320 but leaves a P600 scratch pattern. SP600s can be used on MDF prior to priming and after priming to key the top coat and other material.