This Order declares that certain parts — “upper OR lower mantles” for submerged arc furnaces (tariff classification 8514.90.00) — are goods to which item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies. Effectively, from 3 February 2011 the instrument fixes the tariff treatment for those listed parts until revoked under ss 269SC or 269SD. This matters to importers and manufacturers because it determines the tariff payable and requires customs classification and compliance by importers.