Solderless terminal block is used for making common connections of multiple wires in one point. All 5 inlets are electrically common. Very easy to use. Strip the wire 1/2", lift the orange lever, insert the wire and close the lever. Max 16AWG. For more that 5 wires, can combine upto four 24AWG wire in each inlet. Works best with stranded wires.
NOTE: You would need 4 pieces of CON-TB005 if you are connecting multicolor RGB systems.