Round Bar Weight Distributing Hitches Over five decades ago, Eaz-lift became the first patented weight distributing system in North America. Designed with fewer parts, forge tapered round spring steel bars provide a smoother ride with interchangeable bars that have positive latching action for operation. Eaz-Lift has a broad selection of weight distributing hitches that include right and left hand sway control mounts and bolt together ball mounts providing adjustability of ball height and ball mount angle. Each hitch includes hook-up brackets, spring bars, chains, ball mount, shank and hitch pin, clip and bolt package for adjustable hitches.