This item is impossible to deal with another account.
Take this certificate to upgrade Weapon in Prontera (184, 177).
For weapon that has a refine level of +0 to +18, can refine the weapon to +19 directly.

This item will disappear after use.

[iRO Description]
This item is not tradable.
With this certificate, you are guaranteed to refine your level 4 and below weapon to 19 without any failure. Find the Refine Master in Prontera.
- only for 1 time -
[Refine Master] prontera,184,177,0,100,0,0