Electric Powered A-Frame Trailer Tongue Jack 4000 Lbs Black Screw and Drop Leg Travel 4000 lbs lift capacity;14" screw travel and 8" drop leg travel Total Travel: 22" (14" Lift & 8" Drop Leg Travel) Retracted Bracket Height: 9.75" Extended Bracket Height: 31.75" Inner Tube Diameter: 2" Outer Tube Diameter: 2-1/4" Manual operation: this jack can be manually operated using the included manual crank handle