Measured Bottle Pourer As the name suggests, it pours an exact 30 milliliter measurement of alcohol directly into your glass, making it ideal for parties and events.< /p> Quality Materials: The automatic measuring liquor pourers are made of virgin plastic, a much more durable material and will not corrode. They can be used safely when used for a long time. Easy to use: Simply insert the pour spout into the neck of the bottle and pour the wine to a certain angle. Fits most bottles and serves as a pour spout and stopper.Can be mounted on liquor bottles with a diameter of 20 to 22 mm. Can also be used with juice, syrups and oils. Note: Inaccurate pouring spouts will occur when using with water. Reduces Waste The ball bearing in the pouring spout can pour 30ml each time. This spout is an effortless way to reduce excess spilling and saving two to four extra drinks per bottle.