These high-quality Globes are made of white acrylic,12 inches in diameter with a neck height of .75 of an inch and a 6-inch outside diameter riveted neck made of black polycarbonate, inside opening is 4.73 inches. These globes are injection blow molded and Proudly made in the USA. Each is water and shatter resistant with UV inhibitors to prevent yellowing over time, ensuring you with a great looking and high-quality globe for years to come. This is a custom neck and not returnable.