Sierra/Prime Line 053455-10 Uniiversal 7 Key Kill

053455-10 - Moeller Marine Universal 7-Key Kill Switch Tethers. Kill Switch Tether, Red, 7 Key, Clip. Moeller Marine Universal 7-Key Kill Switch Tethers. Moeller Marine universal 7-key kill switch tethers are your marine emergency cut-offs. These safety lanyards attach to your life vest while operating your boat or personal watercraft and instantly cut battery power when key is detached. These universal key tethers include keys to fit seven popular motors on a 70 in. coil-type tether.