Feature: 1.The silver shell is plating copper, and the black shell is copper black paint plating, along with the gold-plated plug and thickened solder 2.The all-metal design and copper shell brings effective shielding. Thickened solder pad and thickened fixing clamp shall be used for the connection 3.The plug comes with M6 x 0.5 internal thread.It has a interface for wireless microphones 4.The gold-plated plug features oxidation resistance and stable contact performance 5.Suitabel for D12 / D21, for , for and other Lavalier wireless microphone, along with M6 internal thread plug Friendly reminder:This plug with internal thread design can only be used for 3.5mm female port with thread, such as for , for , for and other Lavalier wireless microphones Specification: Interface Type:3.5mm Stereo with M6 internal thread Material: metal colour: Black+gold Package Contents: 5 x 3.5mm Screw Lock Stereo Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.