The car nozzle is effective for thorough cleaning of vehicles, fitting most shop vacuum hoses or wands with a 2-1/2-inch diameter. It can also be used as a blower nozzle when connected to the wet vacuum's exhaust port with extension wands. The 2-1/2-inch diameter allows for maximum airflow and collection of larger debris pieces. This versatile accessory is perfect for cleaning seats, floor mats, and upholstery.