Solder type built-in socket for 3.5mm AUX jack. Smart design with M6 x 0.5 thread and locknut. · Connections: 3 solder contacts to 3.5mm AUX jack · Connection type: 3-pin, stereo (TRS, Tip-Ring-Sleeve) · Thread: M6 x 0.5 with locknut · Material: plastic / metal · Color: black / silver