This Tariff Concession Order declares that a specific part — tube assembly riser fins for solar thermal water‑heater collectors with an aluminium substrate, anodic nickel coating and integrated copper waterway — is covered by Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 30 June 2009. Practically, imported units matching that description become eligible for the tariff concession in that Schedule, reducing customs duties payable by importers until the concession is revoked (see ss.269SC/269SD).