MULTIPLE SPECIFICATIONS - This nozzle can help stick in narrow spaces, 4 different nozzle diameters meet different working needs. Nozzle size: 2.0*34mm, 2.0*50mm, 3.0*50mm, 2.0*70mm, thread diameter: 10.8mm PURE COPPER MATERIAL - Made of quality brass, has been tested hundreds of times for durability, still works like new, copper nozzles could last for even more years than aluminum nozzles HIGH COMPATIBILITY - This glue gun nozzle is suitable for most glue guns. You can measure your old nozzle, if your old nozzle diameter is 10.8mm, you can buy this nozzle to replace All copper nozzle are equipped with Built-in anti-leakage steel ball, no matter the preheating process, in use or after use, there will be no glue leaking from the nozzle WIDE RANGE USES - Jewelry tools, glue gun hot melt tool accessories, can be used for art flowers, toys, wood, plastic, glass, metal, stone, brick, etc. ceramic, paper, fabric and other materials very practical in everyday life 4Pcs Hot Melt Gun Nozzles, Copper Glue Gun Nozzle, Replacement Long Nozzles, Extended Mouth Gun Tool Accessory< /p> Large diameter glue gun nozzle 4pcs/lot Size: 2.0*34mm (0.08*1.34in) 2.0*50mm (0.08*1.97in) ) 2.0*70mm (0.08*2.76in) 3.0*50mm (0.12*1.97in) The package includes: 4 glue gun nozzles, 4 waterproof rubber O-rings Thread diameter: 10.8mm Material: high quality copper and waterproof rubber ring If you want to change the glue nozzles, you need to wait 30 minutes so that the glue gun cools completely. Never touch the body of the glue nozzles when using the glue gun. These glue nozzles have different size for nozzle diameter. The diameter becomes larger, the glue overflows more quickly. You can choose the right size for your situation. Color: Gold