Model #11364: Every sanding sleeve is made to specifically fit the inflatable drum sander, which is fantastic for sanding long flat or curved, sweeping surfaces. The drum sander works best with very low air pressure so it will conform naturally to the shape of your work. Manufactured from very high quality, cloth backed sandpaper, the sleeves eliminate scratches and allow you to apply the sander's total width against the work piece, or use only the edge in all kinds of complex sanding. To eliminate deep scratches or gouges, start with the coarse, heavy 80 grit working your way up to the fine 220 and extra fine 320 grit sanding sleeves for a final finish.