Super Deal 3500 lbs 12V Electric Power Tongue Jack Dual RV Boat A-Frame Trailer Camper ANG (#3) Features easy to operate switch for lifting up to 18" 3 bolt mounting into standard A-frame trailer coupler Easy operation hand crank in case your battery goes dead Fits 2" & 2 1/4" standard trailer tongue mounting holes Powder coat finish resists rusting, Removable foot pad, 12 volt operation