Feature: 1. The silver shell is el-plated copper, and the black shell is copper with black paint plating, combined with a gold-plated plug and thickened solder. 2. The all-metal design with copper shell provides effective shielding. Features thickened solder pads and a reinforced fixing clamp for secure connection points. 3. The plug includes an M6 x 0.5 internal thread, designed for compatibility with wireless microphones requiring this interface. 4. The gold-plated plug offers oxidation resistance and stable contact performance. 5. Compatible with D12/D21, , Shure, and other lavalier wireless microphones with 3.5mm threaded ports and M6 internal thread connectors. Friendly reminder: This plug with internal thread is intended for use only with 3.5mm female jacks that have threading, such as those found on select , Shure, , and other lavalier wireless microphone models. Specification: Interface Type: 3.5mm Stereo with M6 internal thread Material: Metal Color: Black + Gold Package Contents: 15 x 3.5mm Screw Lock Stereo Jack