Husky 31330 Lightweight Pin Trunnion Bar Weight Distribution Hitch - 500 lb. Tongue Weight Capacity Fits Class-III/IV 2 inch receivers Bolt-together head with 6 inch for the lightweight 31330 model, black baked-on polyester powder-coat finish for superior rust protection 5-year limited warranty, rise: 7-1/2 inch; drop: 1/2 inch Shank length: 10 inch, ball to pin hole - 12 inch Balls not included; 1 inch hole requires a 1 inch shank for lightweight 31330 and chains are attached