This Order declares that twin‑screw extruders for cereals and/or grains (Tariff classification 8438.80.00) are covered by item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995. It takes effect from 19 March 2009 and continues until revoked under the Customs Act 1901. Mechanically, it changes how those specific imported machines are treated at the border: importers will rely on the Schedule 4 concession (affecting duty/conditions), the decision being made by a delegate of the Chief Executive Officer under section 269P.