Eccentric bushing for I.A.C. (Integrated Adjustable Caster). 1° setting (identified by 1 dot) allows for either +1° or -1° caster adjustment depending on the orientation of the bushing. Made from famous Hudy Spring Steel™. Set of 2. (click to enlarge) The V2 Eccentric bushings have a milled out slots which will enable the screws to anchor them, thus preventing the bushings from turning in extreme racing conditions.