SIANET 70/30 X 10M70mm x 10m Roll of 7900 sianet sandpaper Grit available  320 Velcro hook and loop roll easy change on sanding block Blue fired/white aluminum oxide resin bonded on to a knitted fabric backing. This makes for a robust abrasive sheet with a long service life. Ideal for automotive, decorative and general industry • Optimum dust free extraction • Very high removal rates • High tear resistance• Good for sanding filler, primer, paint, wood, MDF, plaster and may more substrates