1、Multi Size: This hot air gun nozzle kit adopts 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, and square 10x10mm, 12x12mm, and double layer square 10x10mm, 14x14mm.  2、Locking Screw: The nozzle of the heat air gun is made of locking screw, which can lock the nozzle firmly and effectively avoid the hot air from the clearance between the nozzle and the steel tube of the heat air gun outlet.  3、Suitable Application: This hot air gun nozzle kit is suitable for 850 hot air welding station and can meet your different needs.  4、Easy to Clean: Our heat gun nozzles are easy to clean and work well, practical, light weight and excellent workmanship, very portable.  5、Aluminum and Stainless Steel: Our heat air gun nozzles are made of aluminum alloy and stainless steel for durability, toughness and rust resistance, and for longer life.