The insulated terminal is actually a piece of metal sealed inside the insulating plastic. There are holes at both ends to insert the wire. There are screws for fastening or loosening. For example, two wires, sometimes need to be connected, and sometimes need to be disconnected. They can be connected by terminals and can be disconnected at any time without having to solder or entangle them, which is convenient and quick. And very beautiful, the cabinet does not look so messy, with orderly wiring.