GTW 10,000 lbs. Tongue Wt. 800 lbs. The innovative Pro Series* Trunnion weight distribution is engineered to provide the features you expect in a weight distribution kit at an economical price. * New combination single piece cast head. * Easy to use adjusting washers. * Hex washer style allows for quick spring bar tension adjustment. * Round tapered spring bars. * Compatible with Friction Sway Control (both sides). * Includes Shank (63970). * 5 year limited warranty.