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2.5mm 4 Ploe CCTV DC Power Stereo Female Jack To AV Screw Video Balun Terminal Jack 3.5 mm Female 4 Pin, US $ 0.1 - 0.6 / Piece, Jiangsu, China, RFVOTON, 2.5mm Female Stereo To 4 Pin Screw Terminal Adapter 10.Source from Zhenjiang Voton Machinery Co., Ltd. on Waimaotong.com.