These lamp shade rings are easy to install. Lamp shade adapter rings is applicable to convert the hole of the lampshade ring from lampshade to matching inner hole diameter of the lampshade. Manufactured with plastic material, very safe and practical to use. You will find it very useful and versatile when you need it. Features -Color:White -Material:Plastic -Size(E27 to E26):5.50X5.50X0.80cm/2.16X2.16X0.31in -Size(E27 to E14):4.30X4.30X0.50cm/1.69X1.69X0.20in -Inner diameter of E27 to E26 ring:36mm -Inner diameter of E27 to E14 ring:29mm - Lamp Shade Adapter Rings is made of plastic, which is durable, not easily deformed and last for a long time. - This replacement lampshade adapter ring is easy to install on the lampshade. - This lampshade to adapter ring may be a little tight. Use a little force to install it into the lamp shade. - Lightweight and compact. It is easy and convenient to use, and easy to store when not in use. - workmanship, reasonable structure, professional and practical, can bring you convenience. Package list: 5 x E27 to E14 Adapter Rings 5 x E27 to E26 Adapter Rings