New and high quality with stable characteristics and high reliability. 1. The MOST Diagnostic Kit helps quickly locate fault points, whether the issue is with the motherboard transceiver or cable connections. 2. The optical fiber loop allows removal or addition of a single vehicle device without affecting the car's fiber-optic network. 3. It can diagnose and identify fault points at any node in the MOST (Media Oriented Systems Transport) network. 4. Bluetooth phone modules often fail when the stereo is opened, causing intermittent sound or no sound. By disconnecting the fiber from the phone module and connecting it to the fiber loop, the Bluetooth phone function is deactivated and o immediately returns to normal. Fitment for compatible vehicle models. Attenuation: less than 180 dB/km Working temperature: -55°C to +85°C Color: Black Material: Plastic Size: 11.5 cm x 2.5 cm x 1.2 cm (L x W x H) Core diameter: 1.0 mm Finished product diameter: 2.3 mm Package Contents: 1 x Male Connector, 1 x Female Connector Only the above package content; other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allows an error of +/- 1-3 cm.