STEADi-FLEX® Light Weight Distributing Kit w/Shank, Built In Friction Sway Control & Hardware, 4,000 lbs. (GTW), 250 to 400 lbs. (TW)This weight distributing system is designed with tapered spring bars for a softer ride. Friction material, used for say control, provides a quiet ride. Wide spring bars, with a simple pin and clip assembly, reduce w..