A. Multiple specifications: This nozzle is suitable for narrow spaces. Four different nozzle diameters can meet various work requirements. The nozzle sizes are 2.0*34 mm, 2.0*50 mm, 3.0*50 mm, and 2.0*70 mm respectively, and the thread diameter is 10.8 mm. B. Copper material: It is made of brass. After numerous durability tests, it can still perform well. The copper nozzle has a relatively long service life compared to the aluminum nozzle. C. No dripping: All copper nozzles are equipped with built-in anti-leakage steel balls. Whether during the pre-heating process, in use, or after use, the nozzle is less likely to leak glue. D. Wide range of applications: As a jewelry tool and a hot-melt tool accessory for glue guns, it can be used on practical daily materials such as art flowers, toys, wood, plastic, glass, metal, stone, ceramics, bricks, paper, and fabric. E. High compatibility: This glue gun nozzle is suitable for many glue guns. You can measure your old nozzle. If the diameter of the old nozzle is 10.8 mm, you may consider buying this nozzle for replacement.