【NOTE】 Maintenance testing requires professional knowledge, we do not take any responsibility for your maintenance results. Before you make the order, Please make sure your car using this type standard connector. Package Content: 1 pcs male fiber optic loop adapter + 1 pcs female fiber optic loop adapter. | 【High quality material】durable and reliable to use, great tool for diagnosing / bypassing parts of the MOST optical system. | 【Good performance】Fit perfectly and help to quickly diagnose the problem, not only helpful to motherboard problems but also to the light problems. | 【Quick use】 Male and female fiber optic loop, perfect to diagnose issues with the fiber circuit, remove or add a single vehicle equipment, and do not affect the car optical fiber network. | 【widely used】Auto diagnostic cable tool, can be used to close the optic ring and bypass the useless equipment, suitable for Audi / Benz / BMW VW Porsche MOST fiber ring.