3M™ advanced sandpaper is now better than ever thanks to our new No-Slip Grip™ backing that is applied to the back of our 3M™ Pro grade sandpaper. No-Slip Grip™ backing provides longer sheet life - 7 times longer than conventional sandpaper. 3M™ advanced sandpaper is now better than ever, thanks to our No-Slip Grip™ backing that is applied to the back of our 3M™ Pro grade sandpaper. No-Slip Grip™ backing provides longer sheet life - 7 times longer than conventional sandpaper. For the best sanding results, sand with the grain of the wood and work through a sequence of grits, from coarse to ultra fine, skipping no more than one grit between sandpaper.