Material: The sandpaper rolls are made of aluminum oxide, which could be cut to any desired length. It is a good all-around choice for sanding bare wood metal and for painted surfaces. | Versatile Grits Available: The emery cloth rolls are equipped with 4 different grits, from coarse to fine, 150 grit, 240 grit, 320 grit, 400 grit ( each roll size: 1” x 6m ), which could satisfy most of your needs. | Easy for Storage: The sand paper rolls are packed in a box with 4 grits, it could be easily reached when use, avoid different rolls here and there in a mess. A small box makes big difference. | Multi Usage: The abrasive sandpaper rolls could be widely used in wood, plastic, metal, and drywall surface polishing. What’s more, it also could be used for both powers as well as hand sanding. | A Good Gift: The abrasive paper rolls are good gifts for anyone which do handy works, since it is time-saving, labor-saving and high-efficiency polishing performance.