Goplus 3500 lb Capacity Electric Tongue Jack A-Frame for RV Trailer Boat Jet Ski Camper, 12V (Classic) Solid ConstructionThis jack uses hardened steel gears, which makes it strong and durable for years of normal use. Comes with durable black powder coat finish resists rusting. Utility UseA must have for all travel trailers widely from boats, RV's, campers to any trailer with 2" & 2.25" trailer tongue mounting holes. 3 bolt mounting into standard A-frame trailer coupler.Utility Use: a must have for all travel trailers widely from boats, RV's, campers to any trailer with 2" & 2.25" trailer tongue mounting holes. 3 bolt mounting into standard A-frame trailer coupler. Easy To UseDesigned to install quickly and easily. Powered by 12v outlet. Feature with water seal switch, dual LED side light for use at night and manual crank for emergency use in case your battery goes dead. The tongue jack kit is adjustable with food pad and instruction is included with the package. Large CapabilityFeatures easy to operate switch for lifting up to 18". Maximum lifting weight up to 3500lbs. Package include1 x electric tongue jack, 1 x fuse, 1 x handle crank, necessary wire and instructions.Package include: 1 x electric tongue jack, 1 x fuse, 1 x handle crank, necessary wire and instructions.