Which type of hose couplings are the same and do not have male or female ends?

The Storz coupling is unique because it features a design where both ends of the coupling are identical, meaning there are no designated male or female ends. This design allows firefighters to quickly and efficiently connect hoses or other equipment without having to match specific ends, which is especially useful in high-pressure or emergency situations where time is critical. The uniform design also ensures a secure connection, reducing the risk of leaks during operation.

In contrast, other types of couplings mentioned typically have designated male and female ends, requiring users to match them correctly for a secure connection. This can slow down the process in critical scenarios, making the Storz coupling advantageous in firefighting operations.