Unbreaking

Unbreaking is an enchantment that gives a chance for an item to avoid durability reduction when it is used, effectively increasing the item's durability.

(This can be used on weapons/tools/armor)



Obtaining
Unbreaking I, Unbreaking II, and Unbreaking III can be acquired using an enchanting table and by fishing, in dungeon chests and by trading with a librarian villager.

Usage
For most items, there is a $$\frac{100}{level+1} %$$ chance that using the item reduces durability. On average, tools last $$level+1$$ times as long. For armor, there is a $$\left( 60 + \frac{40}{level + 1} \right) %$$ chance a use reduces durability, meaning each durability hit against Unbreaking armor has a ~20%/27%/30% chance of being ignored. On average, armor lasts ~25%/36%/43% longer.

When durability is reduced by multiple points, as when hooking a mob with fishing rods or getting blown up with TNT, Unbreaking is applied for each point of reduction.

ID