Poly 2"X6" caster for 1 3/4" tube. 2,000lb capacity. $19.95
These scissor leveling jacks can be installed on the frame of any trailer to be used to level the trailer and stabilize weight. Each jack is rated at 7,500lbs ea/15,000lbs per pair. $129.95 includes two jacks and two cranks.
Steel 3 1/2"X7 1/2" jack foot, keeps your jack tube from pushing into the sand, asphalt, etc. $17.95, includes pin.
These easy to use stabilizer jacks conveniently tuck up out of the way for travel and can extend from 11" (fully retracted) to 18" (fully extended). These jacks are $29.95 each, and can be either welded or bolted to the bottom of the frame.