Camper trolley CT-4500 and hardware. Will move a 9900lb trailer with ease. Remote controlled tractor/robot design. Long lasting Lithium Ion batteries. With the trailer tongue jack these run around $4800.00. Selling for $3300 plus shipping. Comes with case, 2 remotes and some spare hardware. Rugged, durable, dependable and small enough to carry with you for those really tight camp spaces. I've recently purchased a 5th wheel. Camper Trolley is only for tow-behind trailers. Will accept tongue weight of over 1,000lbs.