This Tariff Concession Order (TCO 1141354) identifies a specific type of seamless copper tube (coiled, integrally rolled inner grooved fins, diameter 9–16 mm) as falling under an item in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 12 Dec 2011 until revoked. Mechanically, it changes the tariff treatment applied at import for those exact tubes. It affects importers (who must classify and demonstrate the tubes meet the physical specs) and was made by a Customs delegate under the Customs Act 1901.