Declares that imported plastic dryer balls (Customs Tariff classification 3924.90.00) qualify for the tariff concession in Schedule 4, Item 50, effective 21 May 2008 until revoked. Made under s.269P of the Customs Act 1901 by a delegate, revocation may occur under ss.269SC or 269SD. Practically, importers of these goods may claim the specified concession at import; the customs administration decides eligibility and revocation, creating an ongoing compliance and administrative oversight requirement.