Features: 1.Perfect Fitment: Bluetooth aux in cable is replacement forRCD310 RCD510 RNS510, perfect matching. 2.High Quality Material: AUX in adapter cable is made of high quality ABS material, wear resistant, lightweight and have a long service time. 3.Function: Match your phone or pad to bluetooth module, and choose Aux from your radio, then you can use your phone to play music. 4.Original Design: According to the original design, professional manufacturing and not easy to damage. 5.Simple Installation: Just plug and play, simple to install, convenient for using, save your time and energy. Specification: Item Type: Bluetooth AUX IN Cable Material: ABS Application Range: Replacement for RCD310 RCD510 RNS510 (do not fit for RCD200) Replacement for Delta 6/7 Replacement for Premium 6/7 Replacement for R100/110 Replacement for RCD300/500 Replacement for RCD-210/310/500 Replacement for RNS-300/310/510* Replacement for RNS MFD2 CD/DVD