Durability

Nothing lasts forever, just ask my knees. Time was they were spry and full of life, now they grate together like an angry pair of hedgehogs getting in a fight. Equipment is similarly affected. Weapons, armour and tools have a limited amount of durability before they stop working. Think of it like hitpoints for inanimate objects.

Durability is a location in RuneScape: Dragonwilds.