Projectile Protection

Per level

Each protection point takes 4% off the damage, adding up across all your armor to at most 80%.

Goes on

Leather BootsCopper BootsChainmail BootsGolden BootsIron BootsDiamond BootsNetherite BootsLeather PantsCopper LeggingsChainmail LeggingsGolden LeggingsIron LeggingsDiamond LeggingsNetherite LeggingsLeather TunicCopper ChestplateChainmail ChestplateGolden ChestplateIron ChestplateDiamond ChestplateNetherite ChestplateLeather CapCopper HelmetChainmail HelmetGolden HelmetIron HelmetDiamond HelmetNetherite HelmetTurtle Shell

Can't be combined with

At the enchanting table

The table can offer a level when its rolled enchanting power lands in that range. The power comes from the slot's level cost (up to 30 with 15 bookshelves), the item's enchantability and some randomness, so it is not the same as the experience cost.