The TRAC Trailer Dolly provides an easy way to maneuver your boat in tight spots. The leverage provided by this dolly lets you reposition a loaded boat trailer with very little effort. Includes a 1-7/8" chrome hitch ball for use with 1-7/8" and 2" couplers. Heavy-duty construction with 10" pneumatic tires. Max. height to top of hitch ball: 15.5". 700-lb. tongue weight capacity.