This Order declares that trailer- or skid‑mounted pumps used for oil and gas exploration/production fracturing (tariff classification 8413.50.10) fall under Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, giving them concessional tariff treatment from 31 December 2008 until revoked. It affects importers of those pumps (who must claim the concession and meet customs requirements), was made by a delegate of the Chief Executive Officer under section 269P, and can be revoked under sections 269SC or 269SD.