The Optronics ACP7S 7-Way Round Trailer Harness Plug Protector is designed to safeguard your trailer's electrical system from dirt and corrosion when the plug is not in use. This protector comes in a retail clamshell packaging and is made from durable PVC for long-lasting protection. It offers a secure fit to shield the trailer harness plug from damage, corrosion, and debris, helping to maintain the reliability of your electrical system. The surface mount installation is easy, making it a convenient and universal fit for various trailer setups. Keep your trailer connections clean and functioning properly with the Optronics 7-Way Round Trailer Harness Plug Protector.