Model: E27 Wall Socket 4 Key features and benefits U shaped hook threader for easy threading and confident docking. The design guides lines smoothly into position, reducing fuss and frustration during setup. Automatic dock hook with a toggling link. This linkage attaches to both sides of the hook, creating a secure connection and helping to lock the line in place for reliable docking. Flexible threading capability. The U shaped threader is designed to pass a line around a pole, stanchion, or docking point from a distance, giving you flexibility in tight or awkward spaces. Dockside reliability for all skill levels. Whether you are experienced or to docking, this tool is built to provide peace of mind and a smooth, stress experience. Specifications and compatibility ( level) Function: assists with threading and securing docking lines using a U shaped threader and automatic dock hook with toggling link. Compatibility: designed for standard lines and hooks used in typical docking and mooring scenarios. Performance: aimed at reducing line misalignment, minimizing the need for external assistance during docking, and preventing line overboard under common conditions. Use scenarios Marina docking: guide and secure a docking line from the cockpit with less manual effort, improving control during approach and tie off. Pier work around obstacles: pass a line around poles, stanchions, or other docking elements from a distance to avoid close quarters handling. Quick rigging tasks: set up and secure lines efficiently in coastal or dockside environments, saving time and reducing handling complexity.