Replacement Outboard Engine Stop Switch and Safety Lanyard: This part include a boat engine stop switch and safety lanyard. Material: The kill stop switch is made of PP plastic material, waterproof, safe and reliable, the safety lanyard is extendable and flexible. Easy to Install: Wraps around your wrist or clips onto your clothing with the safety lanyard, it will stop the boat engine when you accidentally fall out of the boat. How to Use: The switch is open circuit, so you can pull on the lanyard to activate the engine's closing, or you can just press the red button to activate it. Wide Applications: This is an essential tool when you Boats on the water, suitable for motorcycles, yachts, outboard motors, etc. Specification: Material: Plastic Size Chart: Switch: 2.8cmx5.5cm/1.10inchx2.17inch Lanyard: 10cm/3.94inch Package Includes: 1 Piece Kill Stop Switch 1 Piece Safety Lanyard Note: Please allow slightly errors due to manual measurement and different monitors.