Stones

I can't use stones. Could anyone please explain me that how can use them ? Thx for now

UMJRKKE2

Break Limits for Equipments Equipments that have reached their limits can break limit and be enhanced to a higher level. ◼︎ When upgraded to the limit, Upgrade button changes to Break Limit ◼︎ 5 Stones matching the weapon attributes are required to break limits -Weapons, helms and armors with Physical attribute need 5 Iron Stones. -Weapons with Fire attribute need 5 Red Stones -Weapons with Ice attribute need 5 Blue Stones -Weapons with Lightning attribute need 5 Yellow Stones -Weapons with Poison attribute need 5 Green Stones -Weapons with Wind attribute need 5 Wind Stones -Weapons with Dark attribute need 5 Dark Stones -Necklaces and rings need 5 Magic Stones ◼︎ Increase strengthening level by 5 upon breaking the limit ◼︎ Breaking limits are infinite as long as you possess the Stones ◼︎ Stones are dropped at a low rate upon eliminating monsters (They can be purchased at a low rate on Extra Bonus)