The RAM-B-174U-A consists of hardware for mounting to either brake/clutch reservoirs and rails that are 0.5" to 1.25" in diameter, short length double socket arm and diamond plate for mounting to RAM device cradles or anything with an AMPs hole pattern. 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.