E27 Screw Ring for Lamp Socket, 39 mm, Black, Pack of 4 E27 Mounting Rings for Lampshades and Glass Globes, Lamp Holder Black Plastic, Heat Resistant 210°C

The sizes of this screw ring are as follows: Inner diameter: 39 mm, outer diameter: 55.8 mm, height: 10 mm. Please check the dimensions before purchasing. Please see the pictures in the product details. This screw ring is made of plastic. This insulating material has a number of advantages such as good heat resistance, low flammability, sealing and many more. This screw ring is very convenient because it can not only be used to replace a broken screw ring, but also to fix a new lampshade or lamp holder. You can mount it by means of a bedside lamp, table lamp or floor lamp. 4 screw rings are sent in a package. You can use these threaded rings to decorate your home or store. With a screw ring, you can perfectly assemble lamps and lampshades and make DIY.