... . 2.O D: 2.5 mm , 3.5 mm , 6.3 mm 3.pole: 2 pole, 3 pole, 4 pole. Various stereo connector specification ... .2.O D: 2.5 mm , 3.5 mm , 6.3 mm3.pole: 2 pole, 3 pole, 4 pole.4.shell: gold plated ... : 300v DC min.3. 3.Insulation resistance: ≥ 5MΩ Min.4.Contact resistance: ≤ 5ΩMax5.ROHS or REACH. 3.5mm stereo plug to jack av ...