This stainless steel oil pourer is suitable for about 3/4 " bottle mouth, such as wine bottles, red wine bottles, whiskey bottles, olive oil bottles, vinegar spouts and other seasoning bottles. Widely used in bars, clubs, restaurants, cafes and home kitchens. These Stainless Steel bottle spout are supplied with a sealed dust caps, which not only protects the food from dust, but also effectively seals the spout, insulates the air, and extends the shelf life of the food.