This Order (TCO 1012992) applies a tariff concession (Part III, Schedule 4 item 50) to a specific class of imported goods: "pumps, external gear, hydraulic excavator" classified at 8413.60.90. It takes effect from 15 March 2010 and remains until revoked under the Customs Act. It matters to importers of these pumps because it changes the tariff treatment they can claim, and to customs administrators because it creates a time-limited, revocable exception requiring correct classification and recordkeeping.