Mechanically: under s269P of the Customs Act 1901, this Tariff Concession Order applies item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995 to “SETS, BARBECUE” (Tariff heading 8211.10.00) comprising a scraper and knives, effective 30 June 2009 until revoked under ss269SC or 269SD. Who pays/behaviour: importers of these sets can claim the Schedule 4 concession (changing their tariff treatment), which may reduce import duty and affect Customs receipts; importers must classify and document goods to claim the concession and Customs retains revocation discretion (ss269SC/269SD).