Great Material: Our light socket end caps are made of high-quality plastic, which is durable and long-lasting. The knob design allows for easy installation and removal. Compatible Feature: These light bulb socket cover caps are designed to fit standard light bulb sockets (E26 sockets). Useful Tools: These light socket safety cap plugs help protect string light sockets from weather damage, preventing water or dust from entering the sockets, enhancing electrical safety. Ideal for various applications, including outdoor events and parties. Color: Black Material: Plastic Package Contents: 16 x Light Socket Safety Cap Plugs (other items not included) Note: Slight color variations may occur due to lighting and display differences. These do not affect functionality. Measurement may vary by +/- 1-3 cm.