This Order declares that "cast grinding media, cylpebs" (tariff code 7325.91.00), diameter not greater than 20 mm, are goods to which Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 19 July 2005 until revoked. It affects importers and customs officials by changing tariff treatment for those specific goods and requires correct classification and proof of the goods’ characteristics to claim the concession; the Order was made under s.269P of the Customs Act 1901 and may be revoked under ss.269SC or 269SD.