This Tariff Concession Order (TC 0937101) declares that novelty plastic key‑head covers with key‑ring (customs classification 3926.90.90) are goods to which item 50 of Part III, Schedule 4 of the Customs Tariff Act 1995 applies, effective 1 Oct 2009 (made under s.269P of the Customs Act 1901).
Mechanically, it changes the tariff treatment applied at import for that specific product, affecting importers and customs officers, and remains in force until revoked under ss.269SC or 269SD or a date shown in Column 2.