This Tariff Concession Order (TC 0718205) declares that parts for roll grinders — specifically immersion pumps and contact pumps (classified at 8413.60.90) — are goods to which item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 24 October 2007 (made under s.269P of the Customs Act 1901). Mechanically, that means importers of those parts will receive whatever tariff treatment Schedule 4 item 50 prescribes; the declaration can be revoked under ss.269SC or 269SD. It primarily affects importers, customs officials and suppliers who import these parts.