Ideal for DCC ring main connection with droppers added to the middle lever and the ring main in and out to the outer connections. Connections can easily be remade by lifting the lever. These are genuine Wago connectors not cheap copies that do not grip the cable and fall off - genuine Wago 221 connectors are marked Wago 221 usually on the middle lever. Fake connectors that do not grip the cable are not marked and can be very dangerous and can leave bare cables exposed.