Tariff Concession Order 0909475: This TCO treats certain sprockets for winch drums used in oil and gas exploration and production (29–83 teeth) as goods to which item 50 of Part III, Schedule 4 of the Customs Tariff Act 1995 applies, effective 20 Mar 2009. It affects importers by making those imports eligible for the Schedule 4 concession (who pays: importers); the delegate (Wendy Knowles) issued it under s.269P and it continues until revoked under ss.269SC–269SD, changing tariff-cost incentives and requiring correct tariff classification.