1、RAPID COOL DOWN: This cold air gun with a refrigeration capacity of 529BTU per hour, could rapid cool down, the temperature can be adjusted quickly through the valve. 2、STAINLESS STEEL BODY: The cold air cooling gun is made from stainless steel, which is resistant to corrosion, oxidation and high temperature, ensuring lasting durability. 3、SAFETY USE: The vortex cold air gun uses no moving parts, no electricity, no chemicals, and no electric sparks, very safe and reliable to use. 4、HIGH STABILITY: The vortex tube air cooler can continuously and stably provide cooling in harsh industrial environments. 5、WIDE USAGE: The air cooling gun can be used for cooling plastic, metal, wood processing, welding, bonding, heat sealing, sewing needles, mold processing, etc.