SinLoon 3ft 1 Meter USB 2.0 male and 3RCA to USB & 3.5mm Female Flush Mount For Car, Boat and Motorcycle, FAST Delivery Guarantee(Waterproof Cable USB-3RCA,1M) Professional design for auto vehicles, boat and motorcycle, A USB & 3RCA Male to USB & 3.5 mm Female Extension Flush Panel Mount waterproof cable. Use an existing hole or cut a hole in your dashboard and clip in the socket to flush mount it to your vehicle's ,boat's and motorcycle's dash.(Hole size :25 mm) Very convenient for vehicles indash Radio with RCA Audio/USB to 3.5mm AUX or USB Input mountFor use with any stereo with USB capability and/or auxiliary audio inputs 1/8 audio jack allows input of any MP3 player or external audio device mount can be used above the base of the car dashboard and On the other products,such as boat, Motorcycle. Connector 1:standard USB 2.0 & 3RCA Male ;Connector 2: standard USB 2.0 & DC 3.5 mm Female