Mechanically, this Order (made under s 269P of the Customs Act 1901 by a CEO delegate) declares that a specified salt‑water treatment and control system for a horse‑walker exerciser and trainer (tariff classification 8421.21.90) is to be treated as falling under item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 15 Oct 2010 until revoked (ss 269SC–269SD). This designation alters how imports of that exact described equipment are handled under the Customs Tariff, so importers must match the product description and classification to obtain the Schedule 4 treatment; the decision is administrative and revocable (Wendy Knowles, delegate).