This Order applies a Schedule 4 tariff concession to a narrowly described imported good: cleaning tools for oil and gas well casing with magnets and steel bristles (tariff classification 8431.43.00), effective 14 September 2009 until revoked. The instrument was declared by a delegate of the Chief Executive Officer under s.269P of the Customs Act 1901. Mechanically, importers of that specific product receive the Schedule 4 treatment (which can reduce or remove customs duty depending on the Schedule entry); the concession is administrative and can be revoked under ss.269SC/269SD, changing importer incentives and affecting customs revenue.