Big sale Trailer Socket Tester 7 Pin Electrical Tow Bar Wiring Circuit Light Test Tool for Truck RV Black Label

1、Smart Socket Tester: This socket tester can test every pin socket functions of the car and the whole operation is very simple. 2、Clear in Indication: There are clear lights and label on the test tool this tester indicates quickly if a failure concerns the wiring. 3、Wider Compatibility: One side can connect the 7 pins plug of a trailer and another side can connect the 7 pins socket of a car for test. 4、Good ABS and Copper: Mainly made from premium ABS and copper material not likely to malfunction and has good durability for long term use. 5、Convenient Carrying: Comes with a compact size and a light weight as well the trailer socket tester is very convenient to carry with you.