Our swivel jack is a solid-steel 24" threaded rod attached to a swiveling base plate. Where a level jack is welded perpendicular to it's rod, the swiveling action of this unit allows setup on an inclined surface. Provides for individual adjustment of each leg to help create a level working platform. Precision square acme threads and a massive 9.5" wing-nut provides increased leverage for ease of adjustment under load. Finally this product is zinc galvanized for longevity.