Ironmonger is a Merchant NPC. Ironmongers (Shaun Brown, Barry Brown, Joshua Brown and Bu Liangxiou) are located in the Ironmonger shop of each city.
Ironmongers can repair the durability weapons and armor for a fee (Repair weapons). Half of the lost durability will be restored (rounded down) and the maximum durability will decrease to match this new number. The maximum durability of equipment can be restored with the use of Dreamstone Shards and Dreamstone Powder. You cannot repair equipment if it hasn't lost more than 10% of its current durability.