This Order grants a tariff concession (Schedule 4 treatment) to double universal joint and shaft assemblies (cardan shafts and universal joints) classified at tariff line 8483.10.99, effective 19 January 2010 until revoked. Mechanically, it changes how those imported parts are treated for customs-duty purposes under the Customs Tariff Act. Importers of the listed parts pay adjusted (typically lower) customs duty; the Department (through the CEO’s delegate) decides commencement and revocation. The change lowers import costs for those parts and shifts compliance and record-keeping obligations onto importers.