Simply Auto WD1500 Wet and Dry Paper, 1500 Grit, Pack of 25What is 1500 grit sandpaper best for?Flatting a whole panel. Fifteen hundred grit is where a full cut and polish begins: rather than working on one mark at a time, it takes the texture out of an entire panel of fresh clear coat so that a compound can lift the gloss evenly across the whole thing. That is the difference between paint that looks freshly sprayed and paint that looks like glass. Away from bodywork it finishes resin, plastics and printed parts, which makes it a common grade in modelmaking and hobby work.Panel work asks for a system. Use a soft backing pad so pressure stays even, keep the surface flooded, and work in one direction across the whole panel before turning ninety degrees for the next pass, so you can see which areas have been covered. Keep the sheet rinsed, and change it as soon as it stops cutting, because a loaded sheet will buff rather than level. Then step up through the finer grades before the compound comes out.Twenty five 23 x 28cm sheets to a pack. Silicon carbide grit, electro coated so it does not shed or crumble in use, on a resin bonded waterproof backing that stays flexible and folds around a block or a curved panel without cracking. It is a full standard sheet, so it cuts in half for a half sheet sander or into thirds for a third sheet sander when working dry. By hand it can be used dry, or wet with water, oil or lacquer to keep the dust down and stop the sheet clogging.