3.5mm jack to 3.5mm jack Threaded fixing round connector. Easy input/output configuration for 3.5mm audio system. Comes with M22x1 nut, just make a 22.5mm hole on the board surface and fix it by the nut to realize 3.5mm audio port expansion. 3.5mm female to female Short wire type mounting socket. Facilitates orderly wiring and organizing cluttered cables. Avoid tangled wires that can ruin your home theater experience. Provides easy access to the TRS 3.5mm audio port, extending it to where you want it. For connecting headphones, audio devices. 3.5mm jack Threaded fixing Mount Short Cable socket. Used for car stereo, home stereo, stereo equipment such as stereo 3.5mm audio port extension. Connect smartphone, laptop, tablet, PC, CD, MP3, MP4, headphone. Connector1:3.5mm Female Connector2:3.5mm Male Panel Cutout size: 22.5mm or 23 mm Colour:As Shown Material:plastic Package Contents: 1 x Extension Cable(Due to different product batches, the appearance may vary, which does not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.