Engineered with stamped copper aluminum construction, these hot glues nozzles ensures heat distribution and consistent glues flows, featuring a built in steel ball spring mechanism for leak during crafting or repair tasks This 5 piece interchangeable nozzle set adapts seamlessly to bonding needs, combining industrial grade heat conductivity with ergonomic design for hobbyists and tradespeople alike Ideal for DIYer enthusiasts, and professional requiring adhesive control in woodworking, packaging, or electronic assembly projects Tackle intricate craft designs, secure heavy duty materials, or repair household items with temperature nozzles that messy drips and ensures application Choose from multiple specifications (2.5x32mm to 2.5x50mm) with universally compatibility for 90% + glues, reinforced by copper bodies and aluminum cores for heat retention and iron spring for extended durability, Manufacturer: Thatiarry