Tandem-Axle trailer fenders are intended for use on trailers with two axles. They are commonly found in what is referred to as a "Teardrop" style. The "teardrop" gets its name from the shape of the metal "drop" in between the two axles. We offer aluminum, steel and plastic options for tandem fenders. Most are made right here in the USA and ALL ship for FREE! --Direct to your doorstep!