A rectangular abrasive plate is coated with abrasive material and makes circular movements. It is powered by a flywheel. The orbital sander must always be kept in motion while working to avoid circular grooves. They are perfect for preparing a surface before and after painting. With the vibrations in tiny circles, the random orbital sander is used for ultra-smooth sanding. It can be used on wood, plastic, or metal working. A random orbital sander can be used for various applications from painting jobs to restoring headlight transparency.