This Securnix pack of 4 twist-on spring male BNC connectors is made for terminating RG59 coaxial cable on CCTV installations without a soldering iron or crimp tool. You strip the cable, then screw the connector body onto the coax. The internal spring grips the jacket and shield while the centre conductor seats in the pin, giving a quick, secure video connection to a DVR, camera lead or balun. They work with analogue CCTV and HD-over-coax systems, including AHD, HD-CVI, HD-TVI and HD-SDI video, which covers the bulk of DVR-based camera systems installed in South African homes and businesses. The connectors have a silver nickel-style finish, and a protective boot (sleeve) is shown alongside each connector in Esquire's product image. The pack of 4 suits a small job such as adding or repairing a couple of camera runs, since each run needs a connector at both ends. Pair them with Securnix RG59 or Siamese RG59 + power cable. Esquire lists them as sold with no warranty.