Key benefits - Retractable design with a rotating carabiner reduces tangling and snagging while you move around the boat - Emergency stop capability helps prevent runaway engines when the line is pulled - Broad compatibility for motor boats, cruise ships, and outboard engines - 7-button design fits seven different engine key sets for easy access and operation Product details - Function and safety: The lanyard connects to the engine control system so that pulling the line turns off ignition, causing the boat to slow and stop - Compatibility: Designed for motor boats, cruise ships and outboard engines; 7-button design accommodates seven engine key sets - Materials and durability: Sturdy waxed rope and PU construction with rust-proof stainless steel buckles on both ends for long service life - Easy operation: Connect the appropriate key to the engine control box and snap the hook to the variator; when the line is pulled, the ignition is shut off and the vessel slows and stops Use scenarios - Recreational boating: On a small motorboat with multiple crew members, attach the lanyard to the engine control box and use the retractable line to quickly stop the engine if a crew member needs to move away from the helm - Docking and maneuvering: While docking or moving around the cockpit, the retractable design reduces line tangling, keeping rigging and lines clear during close-quarters maneuvers - Multi-engine or charter operations: For vessels with several engine key sets, the 7-button design allows quick access to the correct key, enabling rapid ignition control and safety when switching engines or performing routine checks Notes - Material and hardware are chosen for durability and reliability in marine environments - No additional tools are required beyond selecting the correct engine key and connecting the lanyard to the engine control box