This Order uses the Customs Act 1901 (s.269P) to treat certain planetary gearboxes (tariff classification 8483.40.90) that meet two technical limits — output torque at least 700,000 Nm and output speed no greater than 25 r/min — as falling under Schedule 4 item 50. It takes effect from 20 April 2006 and remains until revoked. Importers of those specific gearboxes receive different customs treatment; the decision was taken by a delegate of the CEO and stays in force until formal revocation (ss.269SC–269SD).