Wide Application: 7 way Trailer wiring tester, 6 LED lights, can be used for tail, brake, reverse, turn signals, brakes and auxiliary power. Premium Quality: The RV blade connector tester is made of ABS material, it is designed to be weather proof and not easy to be damaged. Portable: Blade trailer wiring tester, small size, can be easily put into glove box, pocket or tool box. You can use it anytime, anywhere. Easy to Use: You only need to plug the wiring tester into the 7 blade RV Trailer plug, suitable for most vehicles with a 7 pin vehicle sockets. Practical: It helps you save the high cost of going to the repair shop, allows you to quickly identify and repair the circuit problems of the socket. Specification: color: black Product size: 13cm*7.5*3.5cm Item Type: Blade Trailer Connector Tester Material: ABS Plug Type: US Plug Application: Trailer, RV Package List: 1 x Blade Trailer Connector Tester