CURT 28350 Weld-On Pipe-Mount Swivel Trailer Jack, 5,000 lbs. Support Capacity, 10-3/4 Inches Vertical Travel. Pipe mount swivel jack features a support capacity of 5,000 lbs., a lift capacity of 3,000 lbs. and a travel of 10". With a jackfoot plate welded on the bottom, this type of jack also provides added stability for your trailer on rough terrain. It comes with a top-wind handle and includes a weldable pipe with a 9/16" hole for secure mounting.