This Tariff Concession Order declares that certain pressure-cleaning kits (tariff classification 8424.30.90) meeting four technical limits are to which item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies. It takes effect from 1 June 2007 and remains until revoked under ss 269SC or 269SD or a date in the table. It chiefly affects importers of those specific kits and customs officers who must apply the Schedule 4 concession; compliance requires meeting the written product specifications.