Pack of 10 BNC cable extend couplers designed for quick, reliable connections between coaxial video cables. Compatible with Samsung System Camera models SDHC75123BF and SDC9441BC and other devices that use standard BNC video connectors. Key benefits Extends cable runs without splicing: join two BNC coaxial cables to reach a DVR, monitor, or camera when existing cable length is insufficient. Secure connection: standard BNC bayonet locking interface keeps cables firmly mated for stable video transmission during long term use. Convenient kit for installers: ten identical couplers provide enough pieces for multi camera installs, replacements, or maintenance tasks. Compact and easy to use: low profile design takes up minimal space in tight mounting areas and allows fast push and twist installation. Broad compatibility: works with common BNC video cables and systems that accept standard BNC connectors, including the listed camera models. Product attributes Function: couples two BNC coaxial cables to extend video cabling length. Quantity: 10 pieces per pack for multiple connections or backups. Design: standard BNC bayonet style for secure, repeatable connections. Size: compact inline coupler suitable for tight junctions and cable runs. Performance: provides consistent physical and electrical mating for video signal continuity during typical surveillance system use. Typical use scenarios Extending a camera feed to reach a remote DVR when the original cable is too short. Adding temporary or permanent cable runs during installation and system expansion across a multi camera site. Field testing and troubleshooting video lines by inserting a coupler to isolate cable segments or a damaged connector quickly. This pack is a practical accessory for surveillance installers and technicians who need a simple, dependable way to link BNC coaxial video cables for cameras compatible with the listed models.