[Upgraded Special Design] 20 PCS RG59 BNC Compression Connector with solid pin, ensuring the core wire enters the connector more accurately, easily, and quickly, preventing bending. Superior to traditional BNC connectors. Effortless installation for RG-59 coaxial Siamese cable: simply insert the coaxial cable core into the compression connector pin and crimp. [How to Use Crimping Tools] Ensure your tool has the correct dimensions for these connectors. Then, secure the connectors with the cable for easier successful connection. These 20PCS BNC compression connectors are compatible with most standard compression tools. [Wide Application] RG59 connectors are ideal for installing CCTV home surveillance cameras, home theaters, and audio/video cables. Designed for all weather conditions, suitable for indoor/outdoor use. Compatible with all analog CCTV, AHD, TVI, and SDI high-definition surveillance systems. [Weatherproof] Robust and well-constructed DC barrel connector BNC connectors for HD video cables, ensuring reliable connection of RG59 coaxial video cables for 720p, 960P, 1080p CCTV AHD and SDI HD. Features extremely low signal attenuation, corrosion-resistant nickel plating, fully waterproof metal construction, and improved conductivity for a permanent, secure connection.