Specification: Type: Lamp holder Shape: sphere Length: 1-1/2 Thread: 1/4-27 Material: Iron Color: Black Package includes: 2 x black ball head lamp holder The lighting adds decorative features to the top while keeping the shadows in place while keeping light. High-quality materials: made of metal, the surface is oil-ground ORB color, with a polished coating, which can prevent the product from oxidation and rust, durable, smooth and burr-free, and feel comfortable. Double thread design: easy to screw on and off, suitable for 1/8 IP (3/8") or 1/4-27 standard harp thread. Easy to install: The spherical design is very convenient to use, and it can be easily installed with bare hands. After installing the lampshade, you only need to screw it to the lamp holder. Wide range of uses: suitable for modern, classic or retro style lamps. Add a touch of beauty to any lamp; improve the appearance of the lamp; replace broken parts, etc. Package contains: 2 pieces-spherical double-threaded lamp holder, suitable for all standard table lamps or floor lamps.