Customs requires the bristle or filling material (e.g., natural animal hair, nylon, polypropylene, or wire), the handle material, the brush's intended end-use (paint application, personal care, industrial cleaning), and whether the article is a complete brush or an unassembled brush head. Each combination can point to a different HTS heading and duty rate, so detailed technical specifications on the commercial invoice prevent delays at entry.

Yes — brooms made primarily of broom corn (a variety of sorghum) have historically been subject to a tariff-rate quota under US law, with an over-quota rate applying once a threshold import volume is reached in a calendar year. Importers of natural-fiber brooms should verify current TRQ status and quota fill levels before shipment to avoid unexpected duty exposure.