Our Custom Starbrite Bumper Cover is designed to fit a 4" x 4" x 92" Bumper but can be customer made to other sizes as well and available for "C" channel bumpers. It is made of .025 gauge polished aluminum with a tread pattern. We custom manufacture these bumpers in 1-2 business days! This is the perfect cover to spruce up your RV or Motorhome. It has been used in many different RVís and Motor homes like Fleetwood, Winnebago, ForestRiver, Thor, Skyline, Monaco etc.