Scotch Brite Flap Wheel
Sandpaper serves to scrape / smooth the surface of the workpiece by rubbing. Subtle and coarse sandpaper is indicated by the numbers listed on the back of the sandpaper. The larger the number written indicates the more smooth and dense arrangement of the sand of the sandpaper. In automotive repair and completion work, sandpaper is used to rub a coat of paint, putty or surfacer.
Machine Sandpaper