Mount this steel track on your trailer wall (hardware not included), then attach rings at the positions that work best for you. This 4 foot vertical mount track can be used to affix tires, tool boxes, and other items to the trailer wall so they stay secure during transport (best when used in conjunction with a floor track). (A selection of anchor rings and straps are also available that will work with the users existing tie-downs, sold seperetely. Please call if you have any questions). Works well on walls of enclosed trailers. Easy to use with multiple anchoring points. Made of high-strength 12-gauge steel with a zinc-plated finish. Load capacity of 6,000lbs. Dimensions: 4 feet Long. 1 per package.