CNC laser cut and formed 3/16" thick steel. Uses factory tire carrier by spacing it our 3" and up 2" for use with larger tires up to 40". Mounting location for factory third light system. Integrated mount for multiple antenna's, flags, light sticks, etc. Rockline Spare Tire Relocation Kit comes with a Limited Lifetime warranty on materials and construction and a 5 year warranty on the the textured black finish.