This Tariff Concession Order (TCO 0803909) applies item 50 of Part III of Schedule 4 of the Customs Tariff Act 1995 to "PEBBLES, TUMBLED" (tariff classification 6815.99.00), effective 12 March 2008 and continuing until revoked. Mechanically, it changes the customs tariff treatment for imports of these pebbles. It directly affects importers of the listed goods, Customs' tariff administration, and the associated compliance tasks of classification and record-keeping (made under s.269P; revocable under ss.269SC/269SD).