This is a Replacement Pipe Light for 1 side of your trailer's Pipe Lights. This LED oval red Light is sonicly sealed into a PVC housing. The Housing mounts on 2 inch PVC (2 3/8 outside diameter), but can be adapted to mount on other sized pvc uprights. The LED lights, colored red, are the brightest lights available and are rated to 100,000 hours. The Light performs Brake Lights, Turning, and running light functions. This replacement piece includes: One Pipe Light PVC Housing, One Red LED Pipe light, One Side of Wiring.