Drilling
From ROSEna Wiki
Drilling is the act of creating a socket into a target item so that a gem can be compounded to it. As such, the whole purpose of drilling is to allow players to add gems to their equipments.
Drilling process
To drill items, certain Drilling Items need to be used onto the item to drill. The target item should not be already equipped when the drilling is performed. Only weapons, body armors and jeweleries can be drilled. The drilling success rate depends on the drilling item's quality. The better it is, the more chance the operation will have to succeed.
Once an item has been drilled, it is possible to gem it. For more information see: Gems Usage.
