WEST SYSTEM 7″ FOAM ROLLER COVERS – These thin polyurethane foam covers are the only roller covers recommended for epoxy application. The thin foam allows you to control film thickness, avoid drips and runs, and get a smoother coating. The 7″ covers can be cut for smaller jobs, narrow strips and tight areas. Cut segments to make an ideal tipping brush. Covers are 7″ wide and sold in a pack of 2.