Features FIRM CONNECTION: The nozzle can be firmly locked by using locking screws to effectively prevent hot air from flowing out of the space between the nozzle and the Heat gun air outlet steel pipe. ALUMINUM ALLOY MATERIAL: Made of premium aluminum alloy material, the body is durable, toughness, rust resistant, easy to clean, and works well. The workmanship is exquisite, and the service life is long. SCOPE OF APPLICATION: Suitable for traditional air pump hot air desoldering stations, and can be used universally. Compatible with the for 850 series and air pump type hot air welding station. 6PCS: There are 6 nozzles in the package in 3mm, 4mm, 5mm, 7mm, 8mm, 10mm. Check the size for fine and detailed works! EASY CARRYING: Comes with a small size and a lightweight as well, these nozzles can be easily installed for convenient use. Specification: Item Type: Heat Gun Nozzle Kit Material: Aluminum Alloy Basic Parameters: Blowing Port Diameter: Approx. 3mm / 0.12in, 4mm / 0.16in, 5mm / 0.2in, 7mm / 0.28in, 8mm / 0.31in, 10mm / 0.39in Package List:6 x Nozzle  Package List 6 x Nozzle