Detachable Tray Arms made from anodized aluminum in two sizes: 5 inches (12.7cm) and 10 inches (25.4cm). These arms attach to standard 1 inch Ball joints, and you can select a mounting base in either BALL or YS for your light head.
Why we prefer these on our camera systems? The detachable arms allow us to extend beyond the range of or our traditional arms. We can [detach] remove a light and help "set up" a shot or fill the frame--illuminate a specific foreground, or background, subject without carrying multiple systems.