The micrometric closure called Sidi Caliper Buckle is adjustable by lifting the central buckle. In order to completely open, lift together both side buckles, or push the center button to slightly loosen one tooth at the time. The system is also adjustable during a race. Replacement buckle for all Sidi caliper buckle models including: Kaos, Genius, Cape, and Dominator. Includes two buckles and two mounting screws.