COAX CONNECTORS BNC ‑ Female, cable ‑ Back to back ‑ 12G 4K UHD and 3G HD‑SDI
275 ohm, in-line, female-female cable adapter, with impedance-matched performance characteristics. 3G HD-SDI type has nickel plated body, 12G 4K UHD type has gold plated body.