BNC on banana plug 4mm

Pole terminal - Adapter for apparatus - Bannen socket

Terminal adapters are plug adapters that accept 4mm laboratory plugs. They are external connectors that interconnect different plugs and sockets and help to adapt existing cables to a new plug and socket pattern.
For example, a lab plug 4mm allows you to connect BNC cables or sockets together.
Available as: Lab plug 4mm - BNC plug, BNC socket, etc.
Also known as HF adapter, BNC - banana jack