The product is a genuine BMW rear window cleaning spray nozzle, specifically designed for models E81 and E87. It comes as a single piece with the manufacturer part numbers 61687199568 and 7199568. This nozzle is meant to be placed on the rear of the vehicle and is an essential part for ensuring proper window cleaning functionality. Made by BMW, this high-quality spray nozzle will effectively help in keeping the rear windows of your vehicle clean and clear.