Columbia offers the widest range of high quality Finishing Boxes in the world. The Automatic Flat Boxes reduce the need to push the compound on to the wall. By engaging, the box springs put pressure on the compound chamber requiring only a light push to operate the box.  Note: Columbia Automatic Boxes do not fit in Road Case. FEATURES: Available in 8", 10", 12" & 14" regular and 8", 10" & 12" Fat Boy sizes Engaging axel creates pressure on mud release Over 50% easier to push Great for vertical flats Bead wheel protects axel from wear while running box on bead Hand made from U.S. billet aluminum and steel components Machined in Columbia's state of the art facility in Canada Columbia Fat-Boy Automatic Flat Boxes