---
title: "Large stone iron wall (Reinforcement)"
url: "https://karos-wiki.pages.dev/en/item-620103"
lang: "en"
description: "When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +6%. (Combined via Instructer NPC)"
---

# Large stone iron wall (Reinforcement)

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Free

When equipped on Buff Super Skill which is effective for yourself and your team, Reduce Critical Damage will be increased by +6%. (Combined via Instructer NPC)

## Usable in

Normal maps

Maps where it cannot be used: [Guild War Arena](https://karos-wiki.pages.dev/en/map-1900339), [Descada Battlefield (Daily Wars)](https://karos-wiki.pages.dev/en/map-9000000), [Sky Duel Arena](https://karos-wiki.pages.dev/en/map-9000199), [Descada Battlefield (Lv. 35-55)](https://karos-wiki.pages.dev/en/map-9003555), [Descada Battlefield (Lv. 56-75)](https://karos-wiki.pages.dev/en/map-9005675), [Descada Battlefield (Lv. 76-95)](https://karos-wiki.pages.dev/en/map-9007695), [Descada Battlefield (Lv. 96-105)](https://karos-wiki.pages.dev/en/map-9009600)

On other maps the game says “You cannot use this item on this map”. Additional restrictions may apply.

How to obtain this item is not known.

Large stone iron wall (Reinforcement)

- **Category:** Materials
- **Sells to NPCs:** Yes
- **Sells to players / trade:** Yes
- **Can be stored:** Yes
- **Usable in:** Normal maps
- **Stack limit:** 10
- **Super stone family:** [Iron wall (critical damage reduction)](https://karos-wiki.pages.dev/en/ssfam-6201) · Buff (self + party)

#### In other languages

tr: Demir duvarın büyük taşı (Takviye) · de: Großer Stein der Eisenwand (Verstärkung) · es: Gran piedra de la pared de hierro (Refuerzo) · fr: Grande pierre du mur de fer (Renfort) · pl: Duży kamień żelaznej ściany (wzmocnienie) · pt: Grande pedra de parede de ferro (reforço) · ru: Большой камень железной стены (Усиление)