Usually referred to as "Wine" bottle stoppers, these beauties can be used in any vessel with a carafe-style neck...Oil and vinegar bottles, orange juice bottles, the possibilities are endless. We make them with 100% American-made Food Grade .304 Stainless Steel body and stopper. Guaranteed not to crack, rust, corrode, pit, chip, peel, or whine, forever. Approved by the FDA and the AWA. Well at least that's what they tell me.