Provides alternate solution to Keyboard Trays.Double socket arm, has a socket at both ends that accommodates 1.5" ball bases (RAM C size).3 inch length.A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection.Connects RAM Mount base for iKey Keyboards (RAM-246U) to RAM Ball Mount for iKey Keyboards (RAM-202U).Uses RAM Mount P/N RAM-201U.