New and high quality with stable characteristics and high reliability. This MOST diagnostic kit helps quickly identify fault points, whether related to the motherboard transceiver or cable connection issues. The optical fiber loop allows removal or addition of a single vehicle component without affecting the car's fiber-optic network. It can diagnose and locate faults within a node in the MOST (Media Oriented Systems Transport) network. Useful for troubleshooting issues such as intermittent sound or no sound from the Bluetooth phone module when the stereo is on. By disconnecting the fiber head of the phone module and connecting it to the fiber loop, the Bluetooth phone function can be deactivated, restoring normal o output. Attenuation: less than 180 dB/km Working temperature: -55°C to +85°C Color: Black Material: Plastic Dimensions: 115 x 25 x 12 cm (L x W x H) Core diameter: 10 Finished product diameter: 23 x 2 Package Contents: 1 x Male Connector 1 x Female Connector Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.