7 Key Kill Switch Universal Lanyard This marine emergency cut-off 7 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 7 key 50” lanyard fits OMC, Johnson, Evinrude, Mercury, Mariner, Force, Yamaha, Honda, Tohatsu, Suzuki, 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.