4107.91Subheading
Leather; further prepared after tanning or crusting, including parchment-dressed, of bovine (including buffalo) or equine animals, without hair on, other than leather of heading 41.14, not whole hides and skins, but including sides, full grain, unsplit
Section VIII — Raw hides and skins, leather, furskins and articles thereof; saddlery and harness; travel goods, handbags and similar containers; articles of animal gut (other than silk-worm gut)
This is a 6-digit subheading — the most specific level of the international HS. Country tariff schedules extend it further; the US tariff lines (HTS) below refine it to 8–10 digits for duty purposes.
US tariff lines for this subheading are not in the bundled starter dataset yet — the full HTS schedule is coming soon. You can still search by code in the tariff simulator.