This external ignition kill switch key lanyard lanyard clip is for the Mercury Mercruiser marine engine. The toggle switch, while not the original one, behaves the same as the toggle switch. Premium quality: The rope clip is made of high quality plastic for durability, the lanyard rope is made of high quality nylon fiber and aluminum alloy, which is stretchy and flexible, high water resistance, carry it on the hand and you will feel comfortable. Replacement switch: Coiled and stretchy, the kill switch lanyard is specially designed to prevent accidental snagging. The package includes a strap to clip on your wrist, if you accidentally fall sideways, the motor will stop. Professional design: Spiral design. Expandable and flexible. The buckle is covered with rubber protection design, it won't hurt you if it rebounds. You can buy it with great confidence. Switch operation: Easy to install. When the lanyard is pulled, the switch turns off and sends the same signal to the motor. You can complete in minutes.