The F2, designed for use with marine, recreational and utility trailers, continues the Fulton heritage of innovation by re-thinking every feature and challenging industry conventions. The result is a re-engineered high quality product that will transform the industry. Maintenance free; designed to eliminate the need for lubrication and maintenance. Corrosion resistant coatings cover internal and external components; will hold up in salt water and other harsh environments. Ergonomic design; crank, release pin and integrated wheel wedge are made of strong, engineered plastic for a comfortable touch. Stylish design; compliment your boat and customize your trailer's styling. Sealed and lubricated one-piece gearbox. Available in bolt-on and weld-on versions for up to 5" tongues. 1600 lb. lift capacity. Fits frame sizes : 3" x 3", 4" x 3", 5" x 3".