The RAM-B-174U consists of a 1″ diameter rubber ball double socket arm hardware for mounting to both brake/clutch reservoirs and rails that are 0.5″ to 1.25″ in diameter. The mounting hardware for brake/clutch reservoirs include both standard and metric mounting bolts. Designed into the mount is a 1″ diameter patented rubber ball and socket system with adjustment points at both ends of the socket arm; this with a twist of the arm knob allows you to move the mount to your optimum viewing position.