Norton Strips Velcro 70mm x 198mm A975 Ceramic hook and loopNorGrip file strips are perfect for refinishing jobsthat require an extremely durable abrasive grainwith a strong reinforced backing that cuts fastplus lasts extra long without generating heatThe family of Norton Multi-Air products has expanded to include Multi-Air file strips and blocks.This simple but effective system works using Multi-Air hand blocks, and a self-generatingvacuum file machine that can be used with a portable or central vacuum system. This innovativesanding process will virtually eliminate dust in your workplace which means more productivity,better quality workpieces, and a cleaner work environment.