Prevention of Bacterial InfectionThe spout caps are easy to install and remove,can full cover your pourers to keep your liquor from dust, debris so as to make the liquor fresher. Tight SealWith tight seal, no longer have to worry about any accidental spilling out or fruit flies enter the bottle; Good and simple dust covers that solves a fruit flies problem Suitable SizeSuitable for most bottles, sufficient quantity to easily meet your use and replacement needs. Perfect plastic bottle covers for pour spout of your oil and vinegar containers, glass olive oil dispenser bottles, flavored syrup bottles, oil & vinegar cruet set. A must have spout cap for home. Reliable MaterialThe spout covers are made of flexible rubber,safe for use. They are BPA Free, no harm to people. The good quality covers are not easy to break, and you can use them for a long time. Wide ApplicationSuitable for wineries, wine clubs, pubs, clubs, restaurants, bars, coffee shops and diners and so on. A helper for bar bartender to pour and store drinks.