HTS code 9902.17.53 covers "Exterior lights, of base metal other than of brass, such lights round in shape, with a height of 11.5 cm or more but not over 12 cm and a weight not over 1.3 kg, each containing a halogen lamp, lamp holder, reflector, autotransformer and electrical connector, the foregoing configured to be mounted to the exterior of an aircraft and designed for illuminating the top surface, leading edge and engine nacelle areas of the aircraft wings for wing icing detection (provided for in subheading 9405.40.60)" 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.