3.5mm 1/8 Stereo to 3.5mm Audio Plug Connector - Silver Metal 3.5mm 3 Positon Male to Male Stereo Adapter for Bluetooth.

3.5mm (1/8') Stereo Male to Male Barrel Adapter. Silver Metal Design for durability Using them to connect headphones, MP3 player, car stereo to a Bluetooth transmitter/receiver/speaker 5 Pack