EASY TO USE: Automatically raises or lowers trailer hitches for boats or equipment trailers; 5.5" solid swivel caster for easier trailer maneuverability INSTALLATION: Bolts to trailer A-frame; mounts to square bars that measure up to 3" W x 4" H; durable plastic holder mounts to trailer tongue to hold connector in place DIMENSIONS: Jack measures 7" L x 6" W; lift height ranges from 31" to 42" H; 1,500 lb. weight capacity ADDITIONAL FEATURES: Seven-way connector for trailers without onboard battery, no wiring needed; LED night light for easy after-dark hitching operations INCLUDES: Includes manual crank handle to use in the event of a power loss Make it easier to level and hitch your boat trailer or other equipment trailers with the Elevate Outdoor Electric Marine Jack. Designed to bolt directly to the A-frame of your trailer, it swivels vertically and horizontally for easy access when you need it, and unobtrusive storage when you don't. The seven-way connector allows it to be used on trailer without an onboard battery, and a durable plastic holder mounts to the trailer tongue to keep the connector in place and out of the way. One 5.5" solid swivel caster provides ample maneuverability; and for nighttime operations, an LED light makes the hitching process safer and easier. In the event of power loss, a manual hand-crank ensures you will always be able to raise or lower the jack. This jack has a lift range of 15" to 25" H, and a weight capacity of 1,500 lbs.