Silk Touch

Per level

Goes on

Diamond AxeStone AxeGolden AxeNetherite AxeWooden AxeIron AxeCopper AxeDiamond PickaxeStone PickaxeGolden PickaxeNetherite PickaxeWooden PickaxeIron PickaxeCopper PickaxeDiamond ShovelStone ShovelGolden ShovelNetherite ShovelWooden ShovelIron ShovelCopper ShovelDiamond HoeStone HoeGolden HoeNetherite HoeWooden HoeIron HoeCopper Hoe

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.