Columbia offers the widest range of high quality, high capacity finishing boxes in the world. From the 8" Fat Boy to the 12", they are all star performers. Well-built and fine-tuned to offer great flat joints for years.  FEATURES: Available in 8", 10", 12" sizes 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 Boxes