Made from steel this mount fits on most platform style roof racks: Prinsu, Front Runner, Echotune, SSO, and Wood Grain Warrior. Both variations also come with mounting hardware (2x 1/4 x 1" carriage bolts, locking nuts, and washers), but extra or specialized hardware may be needed depending on your rack. If you are ordering this mount and have no other you'll also need to order the Universal Mount Plate. You can add that on when you add to cart. This mount works on both the Day Tank and the Weekender. Although, if you are ordering for the Weekender you'll need to order two of the mounts without the Universal Mounts.