HTS code 9902.16.17 covers "Stator core and rotor core laminations, imported in pairs each comprising one stator core lamination and one rotor core lamination; with such stator core laminations having an exterior diameter of 26.42 cm and an inner diameter of 20.35 cm, weighing 4.14 kg or more but not over 6.72 kg; such rotor core laminations having an exterior diameter of 20.2 cm and an inner diameter of 14.0 cm, weighing 3.3 kg or more but not over 5.3 kg; the foregoing certified by the importer as designed to be used in the manufacture of generator motors for charging the battery of hybrid vehicles and of electric motors for propulsion of hybrid vehicles (provided for in subheading 8503.00.95) " under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.