HTS code 9811.00.40 covers "Samples of tobacco products, and cigarette papers and tubes (each sample consisting of not more than (a) 3 cigars, (b) 3 cigarettes, (c) 3.5 grams of tobacco, (d) 3.5 grams of snuff, (e) 3 cigarette tubes or (f) 25 cigarette papers) to be used in the United States only for soliciting orders by persons importing tobacco products, cigarette papers or cigarette tubes in commercial quantities" 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.