Quick Check - This trailer tester is designed to test 13-pin plugs and sockets on a car and trailer. This tester quickly indicates if a fault exists in the car's wiring or the trailer's wiring, and effectively tests the problem with 13-pin plug and socket connection. European Universal Standard - Approved European CE, ROHS certification, universal 13-pin trailer tester For European vehicles, 13-pin tester can effectively test the problem of light connections. Reliable Quality - 13-pin trailer tester pins with safe and reliable performance, reasonable design. Skillful appearance, practical use. Easy to store Can be used with trailers, motorhomes, caravans, bike racks, The tester requires a 9V battery (not included) Easy to assemble - Made of high quality ABS and copper, the frosted surface, durable and reliable, ensures maximum strength and durability for long-term use. Features: Main material: ABS and copper Product type: Diagnostic tool Contents: 1 x 13-pin tester Battery type: 9V (Battery not included)