Specifications2.0 x 34mm, 2.0 x 50mm, 3.0 x 50mm, 2.0 x 70mm, 4 different nozzle diameters meet different working needs. High QualityThe glue gun nozzle is made of copper, sturdy and wear-resistant, good thermal conductivity for smoother and faster glue flow. Waterproof Design All copper nozzles have built-in waterproof steel balls and high temperature resistant silicone seals to prevent glue leakage. VersatileNozzle for use with hot melt glue gun and the glue stick for gluing toys, art flowers, plastic, wood, glass, metal, cables and fabrics. Good CompatibilityThe copper nozzle of the gun nozzle with a thread diameter of 10.8mm fits most glue guns on the market and is an excellent substitute for the original nozzle. Product Copper Hot Glue Gun Nozzle 4 Piece Kit Four different sizes of glue nozzles are available, which have strong compatibility and are easy to operate. Hot Glue Gun Nozzles glue gun made of pure copper, can last more years than aluminum nozzles. Comes with built-in anti-leak steel ball and waterproof rubber o-ring, can prevent glue leaking glue. If your old nozzle diameter is 10.8mm, you can buy this nozzle to replace it. Product Specification Material : Copper Fixed End Opening: 10.8mm Product Sizes: 2.0*34mm -- The inside diameter of the glue gun nozzle is 2mm, length is 34mm 2.0*50mm -- Glue gun nozzle inner diameter is 2mm, length is 50mm 3.0*50mm -- The inner diameter of the glue gun nozzle is 3mm, the length is 50mm 2.0*70mm -- The inner diameter of the glue gun nozzle is 2mm, the length is 70mm Warm Tips 1.Do not touch the glue nozzle body when using the glue gun. If you need to replace the glue nozzle, please wait until the glue gun is completely cooled down before replacing it to avoid burns. 2.The glue nozzle can be used with most glue guns. glue on the market, but some glue guns may have special structures that are not applicable. 3.Due to the different measurement methods, the product size may have a slight error of 1 to 3 mm. Package Included 4 x Glue Gun Nozzles