Quick Check - This trailer tester is designed to test 13 pin plugs and sockets on a car and trailer. This tester quickly indicates whether a fault is in car wiring or trailer wiring, which can effectively test the problem of 13-pin plug and socket connection. European Universal Standard - Pass Europe CE, ROHS Certification, universal 13 pin trailer tester For European vehicles, the 13 pin tester can effectively test the problem of lighting connections. Reliable quality - The 13 pin trailer tester spindles with safe and reliable performance, reasonable design. Skillful appearance, convenient use. Easy to store Can be used with trailers, RV, caravans, bike racks, Testing requires a 9V battery (not included) Easy to Assemble - Made of high quality ABS and copper, its frosted surface , durable and reliable, ensures maximum strength and durability for long lasting use. Features: Main Material: ABS and Copper Item Type : Diagnostic tools Contents: 1 x 13 pin tester Battery type: 9V (battery is not included)