This Tariff Concession Order (TC 0910068) declares that certain planetary gearbox parts — specifically torque limiters and shrink discs classified at 8483.60.90 — are goods to which Item 50 of Part III of Schedule 4 to the Customs Tariff Act 1995 applies. The declaration operates from 25 March 2009 and continues until revoked under sections 269SC or 269SD of the Customs Act 1901. Practically, it changes how those imported parts are treated under the Customs Tariff regime and therefore affects importers and customs administration.