Made of high quality plastics, food-grade.our spigots are food and beverage safe. The faucet is fashionable and beautiful, suitable for most self-service beverage services, widely used in parties and family gatherings The product is suitable for openings of 16mm or 5/8 inch, and the wall thickness does not exceed 17mm or 11/16 inch The faucet must be cleaned before use. The first step is to put the H-shaped silicone pad into the opening of the beverage dispenser , the second step is to insert the faucet into the dispenser, and the third step is to lock the nut.