Replacement Part-WDReplacement Part; Pro Series Complete RB/RB3; Weight Distributing Bolt-Together Head w/2-5/16in. Chrome Hitch Ball; Sway Control Ball/Mounting HardwarePro Series Complete RB And RB3 Weight Distributing Bolt-TogetherReplacement Part-WDThe innovative Pro Series Complete Round Bar weight distribution is engineered to provide the features you expect in a weight distribution kit at an economical price.Provides everything needed to improve towing, safety and performance right out of the box. Preinstalled and torqued sway control ball and 2-5/16" hitch ball, u-bolts and chains. Fabricated head and welded hitch bar. Includes friction sway control and mounting hardware. 10 year limited warrantyWeight Dist Head Kit