Explanatory notes
… teeth of all animals are regarded as ivory (see Note 3 to Chapter 5). (II) Bone, the hard solid parts of the … (4) Handles for tools, knives, forks, razors, etc., of Chapter 82, presented separately. (5) Paper‑knives, … or horn. This heading also excludes : (a) Articles of Chapter 66 (e.g., parts of umbrellas, sunshades, …