Food grade material, lower Mn level, 18 or 8 stainless steel and Premium rubber, Hygienic, dishwasher safe, no rust and keeping alcohol, cooking oil and salad dressing fresh. Fast accurate flow, accurately pours 1 oz or s, the air hole design Say goodbye to slow pouring. 5 layers of rubber plugs to prevent leakage.You can easily control pouring with just one hand, less spillage and mess, allowing you to enjoy the thrill of easy cooking and bartending. Pouring drinks being so fun, No drinking too much. Perfectly Use in bars, home kitchens, restaurants, coffee shops, pubs, family party, clubs, diner. Tapered spout pourers fits a wider range of bottle mouth diameter, up to 3 or 4" inchsuch as gin bottles, whiskey bottles, vodka bottles, liqueur, snow cone syrup bottle, olive oil spout, vinegar spout, wine spout, alcohol bottle, grape juice, salad sauce, fruit juice, syrup, oil, etc. Special: Designed one-piece dust caps, seals spout pourers and prevent being lost. Tips: after pouring wine and sealing the mouth, move the rubber ring down and cover part of the air hole to block little guy entering the bottle.