Our aluminum triple axle teardrop trailer fenders and flares are made of quality marine grade aluminum. Made in the USA and Free Shipping on All Fenders*. Because of their size, tri-axle trailer fenders need to ship LTL freight. The shipping dimensions of these fenders exceed UPS & Fedex's package dimension limits. The price shown is with free shipping to a COMMERCIAL address. Any address that is zoned residential is subject to an additional residential delivery charge.