What is notable about a two-way coupling?

A two-way coupling is characterized by having identical couplings on each end, allowing for flexibility in connecting hoses or equipment. This design enables firefighters to connect hoses from either direction without concern for the orientation of the fittings, which can streamline operations in emergency situations.

The uniformity of the couplings on both ends ensures that they are compatible with one another, making it easier to extend lines or establish connections as needed during firefighting efforts. The ability to interconnect two hoses or devices seamlessly is a crucial feature that enhances efficiency and effectiveness in the field.

In contrast, options that suggest a single coupling for both ends or different couplings on each end do not reflect the concept of a two-way coupling, which requires identical connections for functionality. Furthermore, a design intended for one-way connections only does not apply here, as it is contradictory to the definition and purpose of a two-way coupling.