MATERIAL: Made of clear seeded glass with high transmittance and heat resistance, the light shade looks great with edison bulb PURCHASE GUIDE & SIZE: The lampshade is 5"in opening diameter by 6" height; The fitter opening diameter is 1.72 inches; It installation requirements that the maximum diameter of your bulb not allow exceed 3.5 inch; and only fit to E26 light threaded base with ring (Not compatible with E12 and E39),The outer diameter of the ring needs to be more than 1.7 inch MODERN DESIGN: Design in arc-shade and with air bubble, glass shade looks simple but classy, casting stunning light on the ceiling and wall, great update for light fixtures EASY INSTALLATION: It's easy to replace the old shade on the light fixture; it can fixed by an E26 socket ring but can't be fixed with screws (Socket ring is not included) GREAT FOR: Fitting chandelier, wall sconce, pendant, vanity light or table lamp; can be installed in kitchen, living room and bathroom( not fit to ceiling fan)