Extreme Max Trailer Dolly 600 Lbs. 600lbs.. Perfect for boat trailers snowmobile trailers cargo trailers and more the dolly uses its all-steel frame construction to support any trailer with up to a 600 lbs. tongue weight. Underneath the 10" x 3.5" pneumatic tires make moving the load easy even on rougher surfaces. On top the dolly features a 1-7/8" hitch ball that will fit most trailer couplers. The whole unit is powder coated to resist rust and corrosion and built to last many seasons of trailer moving. Specifications: Ball height: 16"; Total length: 47-1/4"; Width: 25-1/2"; Weight capacity: 600 lbs. tongue weight Note: For use on hard dry level surfaces. Do not surpass 600 lbs. tongue weight capacity. Features of Extreme Max Trailer Dolly 600 Lbs. Perfect for boat trailers snowmobile trailers cargo trailers and more All-steel frame construction supports up to 600 lbs. Large 10" x 3.5" tires roll smoothly even on rough surfaces Ball height: 16" Handle length: 47.25" Width: 26.5" For use on hard dry level surfaces Package Contents: Extreme Max Trailer Dolly 600 Lbs. Extreme Max 5001.5766: Trailer Dolly 600 Lbs. 600lbs.