Compatible with all manufacturers, the Pigtail Plug Safety Shims from Ken-Tool hold the plug in the receptacle to keep on the tail lights. On top of that, they create a tighter fit for the plug in the socket. Compatible with all manufacturers Yellow plastic covering that fits around the plugs to hold it in the receptacle Creates tighter fit for the plug in the socket WARNING: Cancer and Reproductive Harm – See www.P65Warnings.ca.gov