Description: 1.Outer Diameter: 5.7"; Inner Diameter: 4"; Drill hole: 3.8" In. 2.LED Quantity: 16 LED (Inner White 6 LED + Outer Red 10 LED). 3.Waterproof: IP67 submersible waterproof light fixture. 5.Material: With High Quality Durable Round Stainless Steel Chrome Ring. 4.Light mode: Round red/White light serves as brake light, Stop light, tail light, Running Light, Backup Light and Reverse Light; Outer Ring of LEDs comes with dual modes and function as Stop Tail Brake Running lights; Center Clear/White LED act as Backup and Reverse Light. Installation: Red Wire - Brake Light White Wire - Backup Light/Reverse Light Blue Wire - Running Light/Tail light Black Wire - Ground/Negative Fitment: Universal compatibility for vehicles equipped with DC 12V-24V Power Source supply, compatible with any Truck, RV, Trailer, Camper, UTE, UTV, Boat, Caravan etc. Package Contents: 2x Round Trailer Light.