New and high quality with stable characteristics and high reliability. 1. The MOST diagnostic kit helps quickly identify fault points, whether related to the motherboard transceiver or cable connection issues. 2. The optical fiber loop allows removal or addition of a single vehicle component without affecting the car's fiber-optic network. 3. It can diagnose and locate faults at any node in the MOST (Media Oriented Systems Transport) network. 4. The Bluetooth phone module often causes issues such as intermittent sound or no sound when the stereo is on. By disconnecting the fiber from the phone module and connecting it to the fiber loop, the Bluetooth phone function is deactivated and o returns to normal immediately. 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 Note: Other products are not included. Note: Light and display differences may cause slight color variation between the image and the actual item. Measurement error allowed is +/- 1-3 cm.