Cold air gun is very helpful Compatible With the application of rapid dry cooling of small local area, such as machine tool head cooling, cooling treatment of various cutter tools, electronic components cooling, the cooling of welding so on, it is an perfect tool Compatible With small area cooling.Features:Cold air gun is the cold air source which is easy to carry, it is widely used in mechanical drying cooling process.It can only use compressed air to lower the air temperature to produce low-temperature airflow.Clean easy to install, its flexible universal tube delivers cold air to the location where it needs to be cooled.An imptant device to provide cooling applications in harsh industrial environments it can wk continuously stably.It has built-in control valve, thus you can adjust the volume of outlet air the temperature accding to the need.Col: silver and blueMaterial: plastic and metalCondition: Br NewCold Air Gun Length: Approx. 13cm or 5.1inchFlexible Tube Length: Approx. 21.2cm or 8.3inchPackage Included:1 x Cold Air Gun1 x Flexible TubeWking Principle:Cold air gun wks by inputting compressed air into the vtex tube in a high-speed rotating way. In the course of this gas flow movement, the outer air will be heated, the inner air will be cold. When moving to one end, the air will flow back along the center of the vtex to produce cold air stream whose temperature is lower than the actual temperature of 25 degrees to 45 degrees hot air below 110 degrees, thus a cooling source is Compatible Withmed.Only the above package content, other products are not included.Note: Light shooting different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.