Grindstone of Life

A grindstone containing the intense power of life. Use to consume the grindstone and Mesos to polish set Level 4 Special Skill Rings that are untradable for a chance to upgrade them to Level 5. The polish success rate and Mesos consumed are based on how many grindstones are used.

Eligible Items:
Ring of Restraint Level 4
Continuous Ring Level 4
Risk Taker Ring Level 4
Weapon Jump S Ring Level 4
Weapon Jump D Ring Level 4
Weapon Jump I Level 4
Weapon Jump L Ring Level 4
Totalling Ring Level 4
Critical Damage Ring Level 4