This model OA525200Z01 is BNC Female Straight to BNC Female Straight. This series BNC Female Straight to BNC Female Straight have the operating frequency of 8 GHz. Adapters that have a male to female or plug to jack configuration are known as connector savers.
Between Series Adapters are the passive components which are used to transfer signals from one coaxial connector interface to another with minimal losses. Between adapters have different connector configurations on either side of the adapter.