This Tariff Concession Order (effective 6 Oct 2005) assigns specific detonator parts (blast cradles, taggers, blast keys, end plugs, extenders) classified at tariff heading 3603.00.00 to Part III, Schedule 4 Item 50 of the Customs Tariff Act 1995. Mechanically, that assignment changes how those imported parts are treated for customs tariff purposes and therefore affects import duty assessment and customs processing. The declaration is made by a delegate of the Chief Executive Officer under s269P of the Customs Act 1901 and stays in force until revoked under ss269SC or 269SD.