Everything you can enchant

Every enchant in the game, by tier and by the level it wants. They are worked into gear at the bench in Candlemere, and paid for in reagents that come off breaking gear down: crafted gear gives dust, a monster's drop gives essence, and jewellery gives shards. Which tier of reagent you get is decided by the combat level the piece you broke is worn at.

Working an enchant into a piece binds it to you: it can no longer be sold to another player, though a vendor will still take it at its ordinary price. A fine or masterwork piece stays fine or masterwork, and a new enchant replaces the one already on it.

Break down N items, at the foot of your bag, breaks everything you have the enchanting level for but your masterwork pieces, and your fine ones too when Leave fine copies is ticked. Each of those still breaks from its own Break down.