The Sanding Detailer is ideal for finishing those hard to reach areas. The Sanding Detailer is spring loaded to put tension on the abrasive belt. After the abrasive belt is used up the user can simply compress the tool and replace the abrasive belt with a fresh one. They are color coded for easy identification. Finishing kit includes one of each of the blue 240 grit, green 320 grit, yellow 400 grit and black 500 grit tool along with 5 replacement belts of each grit.