This Tariff Concession Order applies item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995 to hexagonal, hot‑rolled steel bars (Customs classification 7214.99.00) with flats between 33 mm and 65 mm, effective 20 July 2011 until revoked. It affects importers of those steel bars and the Commonwealth’s customs revenue. Mechanically, it changes tariff treatment for the specified goods; importers obtain the concession if goods are correctly classified and documented, while Customs retains power to revoke under the Act.