Great Material: Our light socket end caps are made of high-quality plastic, which is durable and long-lasting. Easy to screw in and out with a knob design. Compatible Feature: The light bulb socket cover caps are designed to fit standard light bulb sockets (E26 sockets). Useful Tools: These safety cap plugs help protect string light sockets from weather damage, preventing water or dust from entering the sockets. They also enhance electrical safety. Ideal for various uses including outdoor events and parties. Color: Black Material: Plastic Package Contents: 16 x Light Socket Safety Cap Plugs Note: This package includes only the items listed above; other products are not included. Note: Slight color variations may occur due to lighting and screen display differences. These variations do not affect product performance. Measurement error allowance: +/- 1-3 cm.