This Order (TCO 1126223) declares that certain resin‑bonded grinding wheels (classified 6804.22.00) containing either fused silicon carbide or fused microcrystalline sintered alumina are goods to which Part III, Schedule 4, item 50 of the Customs Tariff Act 1995 applies, effective 4 Aug 2011, made under s.269P of the Customs Act 1901. Practically, importers of those specific wheels are treated as eligible for the Schedule 4 concession (affecting customs duty payable); the concession continues until revoked under ss.269SC or 269SD.