Monument 83 tool has been designed to make the job of fitting both 15 & 22mm tank connectors easy. Traditionally the task of fitting a connector to a domestic cold water tank has been awkward and required 2 pairs of hands or very long arms. The tool engages with the dog drive of the tank connector and can then be used one handed whilst the nut of the tank connector is tightened. Size 15 & 22mm.