Welcome to our store! 1. Perfect Fit: The Bluetooth aux input cable replaces RCD310 RCD510 RNS510, a perfect match. 2. High-Quality Material: The AUX input adapter cable is made of high-quality ABS material, durable, lightweight, and has a long service life. 3. Function: Match your phone or tablet with the Bluetooth module and select Aux from your radio, then you can use your phone to play music. 4. Design: According to the original design, professional production and not easy to damage. 5. Easy Installation: Just plug and play, easy to install, convenient to use, saves time and energy. Product Type: Bluetooth AUXIN Cable Material: ABS Scope of Application: Replacement Compatible with RCD310RCD510RNS510 (does not fit RCD200) Replacement Compatible with Delta 6/7 Replacement Compatible with Premium 6/7 Replacement Compatible with R100/110 Replacement Compatible with RCD300/500 Replacement Compatible with RCD-210/310/500 Replacement Compatible with RNS-300/310/510* Replacement Compatible with RNS MFD2 CD/DVD 1 x Bluetooth AUXIN Cable 1 x Microphone If you have received your item and find any product problems, such as damage or incorrect quantity, please contact us immediately. We do our best to provide you with satisfactory customer service.