[Super Bright] Each 2 side marker light has 4 built-in ultra-bright red LED lights that give you powerful brightness, making it a popular choice for drivers with limited space but a desire to be seen, and miro- -reflex multiple faceted reflectors provide more light output; [Package includes] 10 Pcs 2 Red 4LED side marker lights with red lens, excellent replacements for incandescent lights; used as either a side marker light or clearance light when properly mounted; Outer Dia.:2.5 (w/grommet), inner dia.:2 (lights only) and you will need to drill a hole about 2-5/16 to put the grommets in; [Quick Installation] The 2inch LED marker light is compatible with standard 2-prong plugs, including grommets and 2-prong pigtails. Install the rubber grommets and press the light into them and you're done, no screws are required. If you find difficulty installing the grommets, please blow it with hot air; [Wiring Tips] The truck trailer side marker lights come with the 2-prong trailer wire pigtails, the white wire is ground/negative, and the black wire is positive; Note: these 2 led round trailer marker lights are IP67 waterproof; [Universal Fit] Used as a side marker light or clearance light. Suit for tractor, truck, trailer, RV, or any other 12V vehicles. It is commonly found on air cleaner light bars, cab and sleeper kits, bumpers, rear center panels, and all sorts of other places. ASIN B0DKTWQK78 Color Red - 4 LED Brand Name Wodvyss Manufacturer Wodvyss Model Number F-240651 Included Components 10pcs LED Marker Lights(10Red) Manufacturer Part Number F-240651 Manufacturer Warranty Description 1 Year Manufacturer