SkyArt holds a large stock of aircraft trolley inserts. They are interchangeable, meaning you can remove and replace them with any other insert and instantly change the purpose of the trolley. Wine Glass Hangers are just some of the inserts we offer. They purposely manufactured for users to hang wine and champaign glass easily without falling off. They are made of aluminum for durability. They are manufactured at aviation safety standards, therefore they are non-flammable.