This aluminum oxide sandpaper is used for general purpose sanding on paint, wood and metal These 3M Aluminum Oxide Sandpapers are applicable on wet and dry sanding Use it by hand, on a sanding block, or cut it to size for a power tool sander Be sure to sand with the grain of the wood and always work through a sequence of grits, from coarse to very fine Also available in flexible sanding sponges for flat and contoured surfaces like raised panel doors, cabinets or windows Choose a block sanding sponge or for hard-to-reach areas, like corners; try one of the angle sanding sponges With groundbreaking abrasives products from 3M, you're set up for success on everyday sanding projects large and small. With innovations like sandpaper with No-Slip Grip Backing, you can get the job done with precision and comfort.