2 Pcs Mini Oiler In-Line Lubricator Tool Pneumatic High Pressure. The item is a headphone microphone combo jack splitter. The headset splitter adapter features one 3.5mm headphone jack and one 3. It can turn the combo port into two distinct ports – one 3.5mm Male (TRRS) and two 3.5mm microphone port.5mm audio port.5mm (TRS) Female connectors, enabling you to add a mono microphone input, as well as a stereo output to your PC or Laptop, through a single 3.
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