These high-impact polyethylene fenders are UV-protected and designed for normal and low profile tires. Large fender fits 13" to 15" wheels with single or multiple axles. Two fender brackets are required for each fender. Mounting brackets sold separately (Item #314349). Dimensions: 11-3/8"W x 45"L x 11"H The pre-drilled holes at the front and back of the fender are 5.639" apart.