Pro Series EJ1000 Trailer Jack is designed for use with marine and utility trailers. Pro Series brand tongue jacks are time-tested and application-proven. Features clear zinc finish for corrosion protection. Bolt-on, includes all necessary mounting hardware and 3/8" pull pin. Sturdy 6" Poly wheel. The Pro Series brand retaining ring swivel mount offers minimal deflection and maximum support. Mount fits up to a 3" x 5" trailer frame. Capacity: 1000 lbs., Travel: 10", Retracted Length: 13", Extended Length: 23" (Measured Center of Mount to Bottom of Wheel) Top Clearance: 11" (Measured Center of Mount to Top of Jack).