Large cog

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Large cogs are quest items from the Clock Tower quest. They can be found within the Clock Tower cellar, a section of the Ardougne sewers. In the cellar, there is an intersection of four coloured tiles, each representing a path to a different coloured cog. All four of them must be placed on the clock poles, each according to its colour. Only one of each coloured cog is attached to the structure, and it can only be attached while on the correct floor.