Support your underwater flash with the DELTA 3 Strobe Arm Kit with 11" Double Ball Middle and Top Sections from Aquatica's Technical Lighting Control series. This package gives you a 3-section arm designed for use with an underwater camera housing and tray. In addition to the two 11" pieces, it includes a base post that has a 1" ball for the arm and a flat plate for attachment to the grip handle on your tray.