This 1 x BNC socket to 1 x BNC socket adaptor is part of a range of adaptors suited to interconnection of a wide range of BNC plugs and sockets with nominal impedance of 50Ω.
Suited to many applications including networked computer systems
Of good quality - the picture used does not show the etched 'grip' on the adaptor, which of course is a bonus as it makes attaching and removing the adaptor much easier. Overall, a great adaptor, especially for the price.