This Tariff Concession Order (TCO 0827690) declares that specified directional‑drilling collars for oil and gas (tariff line 8431.43.00), with listed accessories, are goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies. It operates from 22.08.08 until revoked under ss 269SC/269SD of the Customs Act 1901. Mechanically, it changes which tariff rule customs applies to these imported parts, affecting importers’ duty treatment and customs compliance. The decision was made by the Chief Executive Officer’s delegate (Paul Mercer) under s 269P.