Equal-i-zer offers a unique two-in-one design that combines weight distribution with sway control in one easy to use unit. This kit has everything you need except the hitch ball and the tools. 4-Point Sway Control provides superior sway control performance. No add-on sway bars are needed. No drilling or taping makes installation quick and easy. Standard package includes built-in sway control hitch head standard shank 3" drop / 7" rise x 12" spring arms snap-up lever installation hardware and owners manual. Does not include hitch ball. Maximum 400 lb tongue weight and 4000 lb trailer weight.