CURT 28300 Weld-On Bracket-Style Swivel Trailer Jack, 3,000 lbs. Support Capacity, 10-1/2 Inches Vertical Travel. Swivel jacks get their name from the pull-pin swivel feature that allows the jack to pivot on its mounting bracket and swing up and out of the way for travel. This bracket mount swivel jack features a support capacity of 3,000 lbs., a lift capacity of 2,000 lbs. and a travel of 10". With a jack foot plate welded on the bottom, this type of jack provides added stability for your trailer on rough terrain. It comes with a top-wind handle and has a weldable bracket for secure mounting.