This Tariff Concession Order applies a Schedule 4 tariff concession item to a narrowly defined class of transformer oil coolers (customs classification 8419.50.90) that have double cooling tubes, leak detectors, shells and tube plates. It takes effect from 9 November 2009 and continues until revoked under the Customs Act. The practical effect is that importers of those specific coolers may claim the listed concession if they can show the goods meet the written description; the declaration was made by a delegate under s.269P.