Helps you visually guide your boat onto your trailer. Non-marring, marine grade PVC uprights with Galva-Tec(TM) finish hardware. Feature high strength super gripper mounting brackets to attach firmly above and below the trailer frame. Easy bolt-on mounting. Fits trailer frames up to 3" x 5" high. Adjustable to provide optimum fit to any hull design. Height 44" Box 1 pr.