Eyech Interchangeable Hot Glue Gun Nozzles 4 pack Copper Glue Gun Nozzle Assortment Set for Melting Glue Gun Use Craft Repair ToolSpecification:Size: 2.0*34mm, 2.0*50mm, 3.0*50mm, 2.0*70mmMaterial: high quality copperThread diameter: 11mmFeature: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 consistentMade of pure copper material, have been tested for hundreds of times in durability, copper nozzles could last even more years than aluminium nozzlesAll 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 nozzleThis nozzle can help to glue in narrow spaces, 4 different nozzle diameters meet different job requirementsIf you want to change the glue nozzles. you must wait for 30 minutes to wait the glue gun cool down comletelyNever touch the glue nozzles body when you use the glue gunThe package include:4pc Glue Gun Nozzles