Cover the sides of your truck with these outstanding looking pieces. You cant help but appreciate the attention to detail taken in these top of the line battery box and tool box covers. Made of 18 gauge stainless steel and polished to a chrome-like finish, they really put the finishing touches on your truck. Easy to install. Sold in sets only. Designed especially to fit a Peterbilt 379 (1996-2001) This is 12" x 31".