【specifications】2.0 x 34 mm, 2.0 x 50 mm, 3.0 x 50 mm, 2.0 x 70 mm, 4 different nozzle diameters meet different working requirements. 【High quality】The glue gun nozzle is made of copper, is robust and wear-resistant and has good thermal conductivity for a more even and faster adhesive flow. 【Waterproof design】All copper nozzles have built-in waterproof steel balls and high temperature resistant silicone seals to prevent glue leakage. 【Versatile】Nozzle for use with hot glue gun and glue stick for gluing toys, artificial flowers, plastic, wood, glass, metal, cables and fabrics. 【Good compatibility】The glue gun copper nozzle with thread diameter of 10.8mm is suitable for most glue guns on the market and is a great replacement for the original nozzle. Product Description 4 Pieces Copper Hot Glue Gun Nozzle Kit Four different sizes of glue nozzles are available, which have strong compatibility and easy use. Glue gun nozzles made of pure copper are durable for more years than aluminum