Unit 00AL is the perfect jib reefing and furling sysytem for small cruising boats under 26ft. Features include: Set/reef/furl jib from cockpit, Strong triple-interlock aluminum foils, Fits over rod/wire headstay, Main components 6061-T6, Hardkote-anodized aluminum w/Teflon® impregnation, Free-spinning omni-directional bearing system with multiple ball bearing races, Large inner spool diameter for mechanical advantage when reefing/furling, Pressure-cast open aluminum line guard, Small Air Swivels® turn freely, Keyway locks foils to lower unit— detaches without tools, Strong, lightweight, aerodynamic, Double-grooved foil for racing sail changes.