Material: The wine mouth part is made of stainless steel. It is , not easy to rust, and can be used repeatedly. The bottle stopper is made of food grade rubber with good sealing effect. There is no smell at all. Stainless steel pourers are the most popular pour spouts in home, kitchen, restaurants, bar, Try it out on bottles of olive oil, vinegar, coffee syrups, and other products you use frequently. It offer the same great advantages Self Closing-Designed: The liquid out quickly and evenly through our well designed bottle mouth. We design the angle which can automatically opens the bottle mouth when pouring and it can easily control by one hand. Perfect Choice- Simple and practical design make your bottle usage more stylish and convenient. Take your home bar to level and add this pour spout to your cocktail routine for expert, precise bartending skills. , Easy to Clean & Long Lasting. Easy to remove and replace, simply hand wash in soapy water and you'll to use again.