This liquor pour spout set is made of BPA Free top grade stainless steel that is 100% resistant to rust and corrosion. Leaves no metallic taste. Designed with a narrow nozzle and anti-overflow air duct that controls the liquid flow rate and prevents pressure from building up, allowing a smooth and controlled pouring. Helps bartenders and chefs to be efficient in a hectic environment like pubs, bars, restaurants, diners, coffee shops, and more! Its airtight rubber cork fits perfectly into 1.9-inch wine, champagne, olive oil, syrup, and other condiment bottle mouths.