This item is a 3d printed insert to allow attaching an Twelve Bees Custom Designs 10 oz Stemmed Wine Tumbler to a cup turner / cuptisserie using either rotisserie rod with an optional thumbscrew or 3/4 inch sch 40 PVC. other standard size hardware store pvc can also be used by using plumbing adapters to change the size of pvc to 3/4 inch. This listing is for the insert only and does not include the cup see link below to purchase cup separately. please verify the type of PVC you have before ordering some of the turners purchased from overseas off amazon ship with thin wall metric size pvc and will fit very loose. Buy the 30 oz Pilsner at Twelve Bees Custom Designs.