Feature●Package Included (4pcs): 2x 24LED White 4" Round Led Truck Trailer Reverse Lights, 2x 12LED White 4" Round Stop Backup Reverse Light w/ Stainless Chrome Ring.●Dimensions: outer diameter 5.5inch, inner diameter 4" (check the picture 5), dill a hole about 3.85" to install it; Function as back up light, reverse light and running light.●HARDWIRED with THREE WIRES: Black Wire is the Ground; Red Wire is the high brightness for backup or reverse light; White Wire is the low brightness for running light, one function at a time.●These Lights are impact resistant and less susceptible to shock damage. Each LED Light is water-tight sealed, draw less current, generate less heat and are brighter and light faster than an incandescent bulb.●Light size - Diameter: 5.63" (outer) x 4" (inner) x 1.35", hole to hole: 4.33"; Drill hole: 3.8" in.(int.)/4.2"(ext.)Description