Hubceuo Interface Inner Diameter: 45mm Interface Outer Diameter: About 20mm Scope Of Application: Suitable For All Standard E27 Threaded Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage: AC 220V Colour:black Material:nylon Size: 9.5 x 6.5cm Package Contents: 1 x Lamp Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.