Mechanically, this Tariff Concession Order applies item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995 to wardrobe-door rollers (tariff classification 8302.41.00) with a carrying capacity not greater than 30 kg, effective 30 April 2010 until revoked (made under s.269P; revocable under ss.269SC/269SD). It affects importers and customs officials by changing the tariff treatment (and therefore import cost) of those specific rollers; compliance requires correct classification and meeting the stated capacity limit.