When attack with skills, there’s a 10% chance of damaging target’s weapons and armor
When Refining +5 and a skill causes damage to the target’s weapons, it has a 10% chance to damage the target's Off-hand, and when a skill causes damage to the target’s armor, it has a 10% chance to damage the target's helmet;
When Refining +10, the caster's triggering chance of Weapon DMG, Off-hand Damage, Armor DMG, Helmet DMG will be increases by 5%, and will be affected by Dexterity and Luck (can be increased up to 10%)
When Refining +15, protect all the equipments from being damaged.
Hollgrehenn’s Refined Hammer [1]