The Bittydesign Mini Air Trap Airbrush Filter is an ideal accessory for any airbrush with a 1/8 inch BSP connector. An air filter is the final line of defense to to ensure dry and clean air to the airbrush - a must for detailed and precise airbrush work. The clear bowl allows a visual inspection of built-up moisture and removal through a spring-loaded valve that does not require removal from the airbrush. A 5-Micrometer element filters moisture or water quickly. Comfortable in the hand, this filter also acts as a handle on the airbrush to relieve muscle tension.