These are the best for removing built-up material from your belts. With a few passes, you can restore 2-3x the life of your belts by cleaning them. Don't throw belts away, restore them with a natural rubber belt cleaner! This is a great investment and adds lots of value to your abrasives. We use them on belts, sheets of sandpaper, small sanding disks, everything that is made from abrasive on a paper or cloth backer. They're excellent!
(8'' long x 1.5'' wide x 1.2'' thick)