Comprehensive’s 50 ohm BNC Connectors are made of nickel plated brass with a captive/locking gold brass pin that offers more superior conductivity and durability than die cast zinc connectors. The 50 ohm design is the industry standard and easily recognizable by it’s exposed white dielectric in the center of the connector and is recommended for all analog video transmission at frequesncies below 300 MHz and short cable runs. Comprehensive’s lifetime warranty makes Comprehensive connectors the preferred choice of video/multimedia consultants and engineers worldwide.