Harfington Light Socket Rings Lamp Shade Holder Adapter Ring Light Fixtures

What is this? The socket ring helps to secure the lampshade to the lamp, great for holding lampshades for your table lamps, pendant lights, floor lamps, chandeliers. What will I get? Material: Zinc Alloy Fit for Lamp Socket: G9 Pitch: 1.75mm Thread Diameter: 20mm / 0.79″ Size: 28mm x 7mm / 1.1″ x 0.27″(OD*H) Package Content: 4 Pcs x Light Socket Ring Are there any advantages of the product? Great replacement for your old or broken lamp holder rings. Durable and convenient for you to use. How to use it? Easy to install, just screw on the socket to hold lamp shade. What should I notice? This socket ring only fits for G9 lamp holder with a thread diameter of 20mm, please measure your light socket before buying.