The strength of the MV round bar WD hitch begins with its heavy-duty, formed steel head. The formed construction allows for a precise design and supplies the durability needed to manage the weight of heavy trailers. Something unique to the MV weight distribution hitch is its grease zerk fittings, built directly into the head, allowing for easy, continuous lubrication at the spring bar mounting location. The spring bars are installed from the underside of the WD head and are made with forged steel for optimum strength. The shank fits any 2 Inch x 2 Inch receiver tube opening, making it compatible with most class 3, class 4 and class 5 trailer hitches. The head is also compatible with our 2-1/2 Inch weight distribution shanks to match the heaviest of class 5 hitches. The hookup brackets and spring bars of the CURT MV WD hitch use chains and a simple snap-up design for easy setup and adjustment. This particular MV round bar weight distribution hitch offers a towing capacity ranging from 5,000 to 6,000 Pounds GTW and 500 to 600 Pounds.