This Tariff Concession Order (TCO 0815257) makes hydraulic‑fluid filters for earthmoving equipment (tariff 8421.29.00) eligible for the duty treatment set out at item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 30 June 2008 and continuing until revoked (s.269P; revocation under ss.269SC/269SD). Importers claim the Schedule 4 concession at import and therefore pay the duty rate in item 50 instead of the ordinary tariff; the customs delegate decides applicability and revocation, and importers must classify goods correctly and retain supporting documentation.