GW Security Premade 2 x 150 feet Siamese CCTV Coaxial Cable RG59 Combo Cable for Connecting HD-SDI / HD-TVI Camera System with BNC Connector and 2.1mm Power Connector (Black) Perfect connection with no interference or quality decrease for all security cameras. Special made for HD-SDI and HD-CVI Cameras. Professional Grade for 700TVL, 1000TVL, 1200TVL, HD-CVI, HD-AHD, HD-TVI, HD-SDI Cameras.