Norton SandWet 11 in. L x 9 in. W 400 Grit Extra Fine Aluminum Oxide Waterproof Sandpaper 25 pk (Pack of 25)Rely on the SandWet T280 fine grit paper sheet to provide a fast cut rate and a smooth, consistent result. Ideal in wet, oil or dry sanding applications of varnish, enamel, primer, lacquer and sealers, the cut sheet resists curling when exposed to humidity for enhanced longevity. This paper waterproof sheet offers an excellent option for sanding and finishing hard and soft woods in combination with a sanding block or for hand sanding applications. The