Wago compact terminal block connectors are the new and easy way to connect the wires in a light fitting. They use a sprung leaver to open the connector and once the wire is inserted, the leaver is snapped shut and the connection is made. Just mind your fingers when closing the leaver.
This is the 3 way Wago Connector Block. The wires can be removed by opening the clip.
Just use one wire per terminal for best results.
Please note - All the terminals on this connector are joined together so only use on one designation of wire ie Live, Neutral or the Earth wires