Make of metal highly strength light weights wear-resistance and durability. Comeswith a stainsless steel Screw, easy mounting and operating. Usings for both left side and right. Great accessorys for mountain Bicycles. It can help you improve your driving . Brake levers Clamps is a singulars Clamps that mounts both the brake levers and Shifting , reducing weight and redundancy, while maximizing adjustability and Rod space.