Stable characteristics, high reliability 1. The MOST Diagnostic Kit helps you 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 component without affecting the car's fiber-optic network 3. Can diagnose and identify fault points at any node in the MOST (Media Oriented Systems Transport) network 4. Bluetooth phone modules often fail when stereo sound becomes intermittent or silent; by disconnecting the fiber from the phone module and connecting it to the fiber loop, the Bluetooth phone function can be deactivated and o returns to normal immediately Specifications: Attenuation: less than 180dB/km Working temperature: -55°C to +85°C Color: black Material: plastic Size: 11.5cm x 2.5cm x 1.2cm (L x W x H) Core diameter: 1.0 Finished product diameter: 2.3 x 2 Package Contents: 1 x Male Connector 1 x Female Connector Note: Light and display differences may cause slight color variation between the image and actual item. Measurement error allowed is +/- 1-3cm.