A cog is an item obtained within the Dorgesh-Kaan Agility Course in the generator room. It may be requested by Turgall, the goblin in charge of maintaining the city's power station, to repair the power station and complete a lap of the course. The cog, along with the lever and the power box, is one of the heavy parts of the boiler that can only be brought back via the main agility route. Only one heavy part can be held at a time.
If the crossbow grapple route of the course is used while carrying a cog, the cog will break and become a broken cog.
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