Description Arm developed for use with the Octbox Swiveltray to allow it to dock easily under the Basic Box. It can also be used with the D25 Seat Box. Detailed Specification Arm has a 25mm round adaptor on one side with a 20mm post fitted at the other. Length centre to centre is 14cm Can raise the Swivel tray up to 10cm higher than the Seatbox Leg
