The RAM-B-174-DEL1 consists of a double socket arm, hardware for mounting to both brake/clutch reservoirs and rails that are 0.5" to 1.25" in diameter, diamond adapter base and custom high strength composite cradle for the Delorme Earthmate. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at the base and cradle. With a twist of the arm knob, you can move the Delorme Earthmate motorcycle mount to your optimum viewing position. The mounting hardware for brake/clutch reservoirs include both standard and metric mounting bolts.