VideoSecu 2 Pcs of BNC Male to RCA Female Connectors for CCTV Camera Cable WC2 BNC Male to RCA Female Adapter Precisions machined, for maximum signal transfer and corrosion resistance BNC locking mechanism designed for the easiest, highest quality connection True 75-ohm impedance for the lowest dB lows and most reliable signal transfer Specially constructed high-tolerance fittings ensure best possible contact pressure for superior connection