tools for electronic components cooling, welding cooling, and other small area cooling applications. Features: Cold air gun is a portable cold air source widely used in mechanical drying or cooling processes. Uses compressed air to lower the air temperature and produce low-temperature airflow. Clean and easy to install, with a flexible universal tube that delivers cold air to targeted areas. Designed for reliable cooling in harsh industrial environments, capable of continuous and stable operation. Equipped with an built-in control valve to adjust the outlet air volume and temperature as needed. Color: as shown Material: plastic + metal Working Principle: The cold air gun operates by directing compressed air into a vortex tube at high speed, creating a rotating gas flow. Within the tube, the outer layer of air heats up while the inner core cools down. As the airflow moves to one end, it reverses along the center, producing a cold air stream with a temperature reduction of 25°C to 45°C below inlet temperature, while hot air is expelled separately. This process creates an effective cooling source. Package Contents: 1 x Vortex tube with joint universal tube Note: Light reflection and display differences may cause slight variations in color. Measurement error allowed is +/- 1-3 cm.