7pcs/Set 3-12mm Universal Hot Air Gun Nozzle Kit for 858D Welding Tools Soldering Station Stainless Steel Heat Gun Tips. Strong versatility, suitable for a variety of hot air desoldering stations. High-quality steel, not easy to rust. Tighten the screw to lock the air nozzle, which effectively prevents hot air from flowing out from the between the air nozzle and the steel pipe of the air outlet of the heat gun.