We will always hold your back while shopping!Features:100% Brand new and high quality!Trailer Tester for 7 pins plug and socket connectionIt use to tester the wiring assignment/wire circuit between the car and trailer correct or not.Specifications:Material: ABSColor: BlackSize: 19.5 x 5.5 x 4.2cmPackage includes:1 * 7-Pin Trailer TesterSolving your any problems.