The next generation of trailer-jack technology. All the features of traditional jacks are refreshed in this industry-challenging marvel. It's maintenance-free housing and gearbox requires no maintenance, which means no messy grease or oil. A corrosion-resistant coating covers internal and external components for reliable use in even the harshest saltwater environments. Everything about the F2 is user-friendly, with comfortable-to-operate crank and pivot-release pin. Handle locks in an out-of-the-way in the upright position for clear towing. Dual 7"-dia. wheels roll independently for smooth turning. Includes bolt-on hardware for 3" x 3" and 3" x 4" trailer frames. 1,600-lb. lift capacity. 10" upward travel.