Red Hound Auto DOT Compliant 4" Round (2) Amber 12 LED Stop Turn Tail Light Brake Flush Pair Truck Trailer Universal (2) Round Submersible DOT Complant Trailer Lights; each with a whopping 12 brilliant diodes Universal; Fits standard 4" holes to replace your old lights; just pop out your old one and pop ours in! Also good for new applictions Standard 3-prong connector with pigtail included in case you need it Black grommet for a perfect fit included Lights are lab-tested for brightness and to withstand vibration, wet conditions, movement