1Excellent Stainless Steel Material: This heat gun nozzle kit is made of excellent stainless steel material which is durable and high temperature resistant. 2Multiple Sizes: This hot air station tips has multiple sizes, including 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, 10x10mm, which can meet your different usage needs. 3Locking Screw: This hot gun nozzles comes with a locking screw that locks the nozzle in place, effectively preventing hot air from escaping through the gap between the nozzle and the steel tube of the hot air gun outlet. 4Good Compatibility: This hot air soldering heat gun nozzle is compatible for use with the 850 series and air pumped hot air brazing nozzle replacements. 5Wide Application: This hot air gun nozzles has a wide range of applications and can be used for electronic repair, home improvement, automotive repair and so on.