The Eaz-Lift TR3 400 lb Kit is a weight distribution hitch with a 600 lb maximum tongue weight rating that features adjustable sway control. By simply adjusting the clamp, you can decide how much sway control is exerted on the trailer. The TR3 will distribute the weight of your trailer across the axles of the tow vehicle and provide as much sway control as you choose. Or, turn the sway control completely off in dangerous or icy road conditions. Its streamlined design makes the hitch and the trailer move as one, while creating a sleek look. Includes a pre-installed 2 5/16-inch hitch ball. The Eaz-Lift TR3 is easy to install on top-mount or bottom-mount coupler style trailers. Adjustable Sway Control: The sway control can easily be turned completely off in dangerous or icy road conditions Adjustable Sway Control: The sway control can easily be turned completely off in dangerous or icy road conditions Provides Better Sway Control with Easy Adjustments: The sway control collar uses brake pad material to provide better sway control Maximum Tongue Weight: 600 lb; Maximum Gross Trailer Weight: 6,000 lb Easy to Install: The Eaz-Lift TR3 is easy to install on top-mount or bottom-mount coupler style trailers