This Tariff Concession Order (TCO 0706737) treats locomotive parts—couplers and coupler heads (classification 8607.30.00)—as goods eligible for Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 7 May 2007. Mechanically, that makes those imported parts eligible for the tariff concession; importers stand to pay less (or no) customs duty. The declaration was made under section 269P of the Customs Act 1901 and may be revoked under sections 269SC or 269SD; it was signed by a CEO delegate.