Section 15 Base metals and articles of base metal 83 Miscellaneous articles of base metal 83 05 Fittings for loose-leaf binders or files, letter clips, letter corners, paper clips, indexing tags and similar office articles, of base metal; staples in strips (for example, for offices, upholstery, packaging), of base metal Commodity Code Description 83 05 10 Fittings for looseleaf binders or files 83 05 20 Staples in strips 83 05 90 Paper clips, including springtype paper clips