This Sale is for One 6" Drum White opal glass. (The listing shows a picture of two glass pieces but you are purchasing only one at a time. Picture is for illustration purposes only. Thank you ) This is a very nice glass piece and comes individually boxed and packaged very well for a safe arrival. The glass piece measures 6 7/8 inch at the widest point and 3 1/2 inches tall at the end of the neck.. This glass is meant to fit on a 6 inch fitter ceiling pan or canopy secured with thumb screws. The outside diameter of the neck is 5 7/8 inches and the inside diameter of the opening of the neck is 5 1/4 inch. Please check your fixture or existing glass for reference. Glass is the type of material and they are made in the USA.