This Tariff Concession Order declares that specific imported parts — "drive groups having 3V-belt pulley and tensioner" for off‑highway rear dump trucks (classification 8708.99.99) — are subject to item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 23 December 2010 until revoked. Mechanically, it changes the tariff treatment for those imports. Importers gain the Schedule 4 concession; the Customs delegate (under s.269P) decides and may revoke (ss.269SC/269SD). Compliance requires correct classification and claim at import.