The crab helmet is a members' only piece of armour. To obtain this item, players must have 15 Crafting and have access to the Mogre Camp, unlocked when players have partially completed the Freeing Pirate Pete sub-quest and kill crabs until they drop a fresh crab shell, and then use a chisel on it. If successful, the player is granted 32.5 Crafting experience.
There are no level requirements to wear the crab helmet; it is designed as a piece of decorative headgear only, and as such does not provide any combat bonuses.
- Prior to the Evolution of Combat update, the helmet used to provide bonuses identical to those of the iron helm.
- Its sprite is the same of the old sprite for metal medium helmets.