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For the strong attacks taught by the Nailmasters, see Nail Arts.

Nail is the term used to describe the bladed weapons wielded by several enemies, NPCs, and bosses in Hollow Knight, including the Knight.

The Nailsmith in the City of Tears can upgrade the Knight's Nail up to 4 times if given enough Geo and Pale Ore, which increase the damage of Nail strikes.

The Fragile Strength/Grimm Troupe Icon.png Unbreakable Strength and Fury of the Fallen Charms also increase Nail damage.


Nail Description Upgrade Cost Damage
Nail 1 Old Nail.png

Old Nail
A traditional weapon of Hallownest. Its blade is blunt with age and wear. Default weapon 5
Nail 2 Sharpened Nail.png

Sharpened Nail
A traditional weapon of Hallownest, restored to lethal form. Geo.png 250 9
Nail 3 Channelled Nail.png

Channelled Nail
A cleft weapon of Hallownest. The blade is exquisitly sic balanced. Geo.png 800 + 1 Pale Ore 13
Nail 4 Coiled Nail.png

Coiled Nail
A powerful weapon of Hallownest, refined beyond all others. Geo.png 2000 + 2 Pale Ore 17
Nail 5 Pure Nail.png

Pure Nail
The ultimate weapon of Hallownest. Crafted to perfection, this ancient nail reveals its true form. Geo.png 4000 + 3 Pale Ore 21


By jumping and slashing down with the Nail on environment jugs, spikes, or enemies, the Knight can bounce. This move, known as "Nail-bouncing" or "pogo-jumping", is useful for fighting enemies and platforming.

In the Fungal Wastes, there are purple mushrooms which the Knight can Nail-bounce on to bounce higher than usual. They must be used as a platform to access the Mantis Village and other locations before obtaining the Mantis Claw, Monarch Wings, or Isma's Tear.

Aside from these mushrooms, there are a few other times where Nail-bouncing is required:


  • Upgrading the Nail does not change its appearance in the Knight's sprites.