Tariff Concession Order 0617297 designates a specific class of small roll crushers (Tariff code 8474.20.00: rolls ≤300 mm diameter and ≤100 mm length) as goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies, effective 18 September 2006. This changes the tariff treatment on import of those precisely described goods, affecting importers who pay customs duties and their sourcing decisions. The delegate acted under s.269P of the Customs Act 1901; revocation may occur under ss.269SC or 269SD.