Stainless steel rings with powder coated metal screens. Allows for closer installation of the Rock Tamers Mudflap System to your tail pipe(s) by providing a flow-through for hot exhaust gasesSimple 2 piece design screws together with the included screws to give you a professional, functional and finished lookGrid design provides protection from small debrisStraight forward installation and versatile positioning allows for customization to your specific requirementsThe exhaust outlet can be mounted anywhere on your mudflapRT200 comes complete with 2 exhaust outlets, chisel tool (for cutting the hole in your flap) and handy templateComplete installation instruction included