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 screwing in and out. Compatible Feature: These light bulb socket cover caps are designed to fit standard E26 light bulb sockets. Useful Tools: These safety cap plugs help protect string light sockets from weather damage and prevent water or dust from entering the sockets, enhancing 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: The package includes only the items listed above; other products are not included. Slight color variations due to lighting reflections and screen display differences may occur. Physical product colors may slightly differ from images but do not affect functionality. Measurement error allowance: +/- 1-3 cm.