This Tariff Concession Order (0509995) declares a specified class of oilwell connectors eligible for the Schedule 4, Part III, item 50 tariff concession from 29 July 2005. It affects importers of connectors that meet the technical description (non‑helical interlocking teeth; metal‑to‑metal seals; diameter ≥50.8 cm) by changing how customs duty applies to those imports. The Order was made under s.269P of the Customs Act 1901 by a delegate of the CEO and remains in force until revoked under ss.269SC or 269SD.