Mesee Interchangeable Hot Glue Gun Nozzles 4 pack Copper Glue Gun Nozzle Assortment Set for Melting Glue Gun Use Craft Repair Tool Specification: Size: 2.0*34mm, 2.0*50mm, 3.0*50mm, 2.0*70mm Material: high-quality copper Thread diameter: 11mm Feature: It must be a glue gun that uses a glue stick with a diameter of 11 mm, and the nozzle can be replaced and the thread must be consistent Made of pure copper material, copper nozzles could last more years than aluminum nozzles. All copper nozzles have a built-in leakproof steel ball, no matter in pre-heating process, in use or after use, there will be no glue leakage from the nozzle This nozzle can help to glue in narrow spaces, 4 different nozzle diameters meet different job requirements If you want to change the glue nozzles. you must wait for 30 minutes to wait for the glue gun to cool down comletely Never touch the glue nozzles body when you use the glue gun The package includes: 4pc Glue Gun Nozzles