10 Key Kill Switch Universal Lanyard This marine emergency cut-off 10 Key Universal Kill Switch with Lanyard attaches to your life vest while operating a boat or personal watercraft. Designed to instantly cut battery power when detached. Constructed of injection molded nylon and Delrin. The 10 key 50" lanyard fits Johnson, Evinrude, Mercury, Yamaha, Honda, Tohatsu, Suzuki, Kawasaki, OMC, and Nissan kill switches. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.