F2C Adjustable Height 3500 Lb 12-Volt A-Frame RV Trailer Jack Electric Power Tongue(#1) 12 volt operation;Up to 3500 lbs. lifting capacity; Removable foot pad;Powder coat finish resists rusting; Features easy to operate switch for lifting up to 18"; 3 bolt mounting into standard A-frame trailer coupler; Powder coat finish resists rusting;Easy operation hand crank in case your battery goes dead.