This Item is a Replacement Fender Back for 32 inch Long Cold Rolled Steel Single Axle Trailer Fenders. This Fender Back is Raw Steel, and is intended to be welded into the 90 Degree Beck Portion ( The Back) of your trailers single axle round fender. Using this Item additionally allows your trailer protection from road debris, dirt, and mud. You can review the dimensions of this Fender Back in the pictures, but typically you would use this fender back on a Round Cold Rolled Steel Single Axle Single that would measure 32 inches long and around 15 inches high. When installed, the Fender Back Covers most of the Fender opening, but typically some extra portion of the fender will stick down below the fender back.