Durable Construction : Crafted with a strong nylon body and high-conductivity copper terminals, ensuring resistance to water, high temperatures, wear, and corrosion. Wide Adaptability : Works seamlessly with the majority of 7 way trailer plugs found on SUVs, trucks, boats, and other towed vehicles. Testing Made Simple : A yellow button initiates the testing process, providing a straightforward method to verify the functionality of your trailer lights. User-Friendly Design : Ergonomic design for comfortable plugging and unplugging, enhancing usability. All-In-One Device : Test multiple trailer light functions including taillights, brake controller output, reverse circuit, and turn signals. Invest in durability with our 7 pin trailer plug tester, featuring a robust nylon body built to withstand the elements. Its wide adaptability ensures compatibility across various trailer types, while the simple-to-use yellow button streamlines the testing process, making it an essential tool for any vehicle owner. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store