Springfield Drive-On Jack Quick Change Trailer
Gives you more holding power - works easier than ever! Works on all surfaces and most trailer axles (round or square) from 10 - 15 wheels. To use, just place the jack under the axle and drive forward or reverse a few inches - Quick Change automatically raises the trailer to the proper height for changing tires, lubricating or replacing wheel bearings etc. Two-ton capacity, high strength aluminum construction.