This Tariff Concession Order declares that nitrogen generators for pneumatic tyre inflation (tariff classification 8421.39.00) are goods to which item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies. It took effect on 8 October 2007 and remains in force until revoked under ss 269SC or 269SD of the Customs Act 1901. Importers of these machines and the customs administration are affected because the order changes the tariff treatment and hence duty/concession eligibility for that specific product.