Keep your tow-trailer load riding smooth with the Pro Series 10,000-Pound Weight Distributing Kit. This unit is designed to replace or upgrade your current towing weight distribution system. The trailer weight-distribution head is constructed with a chrome 2-5/16-inch hitch ball, sway control, and mounting hardware. This replacement head fits Pro Series weight distribution systems PS49903, PS49902, and PS49901. It's designed with durable steel construction with a protective finish that keeps it safe from rust and corrosion. The sway control ball can be used on either side of the head assembly and also includes an incredibly durable construction and includes all necessary hardware you need for installation. For your pickup truck, SUV, or van, this weight distribution kit is a great way to make your towing capabilities better and easier on your vehicle.