Valley Weight Distribution Hitches evenly distribute weight over the entire length of the towing vehicle and trailer, resulting in a more level ride with more control and stability. The gross trailer weight of the distribution hitch rates up to 12,000 pounds and tongue weight up to 1,200 pounds. It includes raised ball platform for greater coupler clearance and weight distribution shank. The total height adjustment of the weight distribution hitch is 8'' and the length of the shank is 10''. Weight distribution hitches also deliver better braking, less strain on the towing vehicle and increased towing capacity. The kit comes with ball mount and shank assembly. Weight distribution hitches deliver3 extra safety and towing capacity.