-Stop/turn tail light functions -Single universal mount Make safety priority with high-quality boat or utility trailer lights! Single universal mount tail lights from Optronics feature stop/turn tail light functions with reflector plus red side marker reflector and rear clearance. The red tail light model ST-17RS includes a clear license plate illuminator. Driver’s side comes with license plate illumination passengers side will not. Size: 8 1/16 X 2 7/8 Waterproof Trailer Over 80 Tail Light Kit sold separately and can be found through item search at item number 38-511-678-00- SKU: RWRDQSEBP5230