20503 6.5mm Male To 3.5mm Female Adapter Excellent Sound & High Quality: It is made of solid brass copper, with a much longer service life compared with those plastic connectors with metal painting. 24K Gold-plated connectors resists corrosion and ensures minimal signal loss. Thoughtful Design: The stereo jack adapter dopting gear grinding technique, 360 degree grip treads help easy plugging and unplugging. Mini size and portable. Powerful Connectors: Stereo In and Out 1/8 inch to 1/4 inch TRS adapter. Note: This converter requires the plug with TRS 3 conductors, rather than TS (2 conductors) or TRRS (4 conductors).