Open Bottom Mason Jar Glass Shade with 1-5/8-Inch Fitter Opening Lighting Lid (WM Quart Ball Jar, Blue)

The lid has a 4cm (about 1 5/8") hole in the middle, which fits a variety of pendant, vanity, sconce, and other light fixtures that use a 1 5/8" fitter opening. Your fixture should have a plastic locking ring that screws on and holds the glass...