This 3-inch random orbital sander is your best bet for an efficient sanding experience .The circular sanding motion ensures a smooth finish on any surface while the ergonomic grip reduces hand fatigue. With ITS compact size it's perfect for industrial and scientific applications. The only downside is that it doesnt come with a vacuum, but that can be easily solved with a separate dust collector. Overall, this is a reliable and powerful tool for any professional woodworker or metalworker..