Description: 【Material】: Crafted from bakelite plastic, these E26 lamp shade collar rings offer insulation, high temperature resistance, and rust resistance properties for long term use 【Easy Installation】: Simply add a lampshade to your light fixture and secure it with these rings for a quick and easy setup 【Convenient Replacement】: Light Socket Collar Rings are great for replacing missing or damaged lamp rings, ensuring your lighting fixtures are always in top condition 【Size】: Designed with an outer diameter of 5.5 cm (2.17 inches) and an inner diameter of 3.3 cm (1.30 inches), these Light Socket Rings are compatible with most standard E26 light sockets 【Versatile Use】: Lamp Shade Collar Retainer Rings are great for various lighting applications, whether at home or in commercial settings, providing a secure hold for your lampshades while enhancing the overall aesthetic of your space Specification: Material: Plastic Size Chart: Outer Diameter 5.5cm/2.17inch; Inner Diameter 3.3cm/1.30inch Package Includes:3 E26 Light Rings Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.