Designed to Fit a 28mm Swaybar. Nolathane Swaybar Bushings feature a knurled ID specifically designed to retain grease. Backed up by a Limited Lifetime Warranty. Nolathane bushings are made from the highest quality elastomers and designed to synchronize your suspension system for optimal safety, handling, performance, ride quality, longevity and reduced maintenance. They are the most positive link between your vehicles body, springs, struts, arms, bars and shocks.