High-quality: The stopper is made of high-quality ABS, PP, and silicone, which are safe and environmentally friendly. The nozzle is reusable, durable, and reliable for long-term use. Universal size: These bottle pourers fit most wine, alcohol, coffee, syrup, vinegar, and olive oil bottles with an inner diameter of 1.9 cm. Leak-proof design: The silicone plug features a threaded design and ventilation holes to help secure the spout in the bottle and prevent leaks. It also protects contents from dust and insects. Ventilation holes help ensure the material has no unusual odor. Easy to use: Simply remove the bottle cap and insert the pourer. With one-handed operation, the cap can be opened and closed by gently pressing. Widely used: Suitable for use in homes, restaurants, cafes, bars, KTVs, nightclubs, and similar settings. Ideal for bottles containing spirits, olive oil, vinegar, liqueur, bourbon, wine, and juice.