A black cog is a quest item used in the Clock Tower quest to repair the black wheel. It can be obtained by entering the North-Eastern door at the 4 coloured tiles in the Clock tower's basement. You need to either be wearing ice gloves or have a bucket of water in your inventory.
Disassembly[]
| Disassembly XP | 0.1 |
|---|---|
| Item quantity required | 1 |
| Material count | 1 |
| Base junk chance | 98.9% |
| Possible materials | |
| Often | |
 Simple parts | 99% |
| Rarely | |
 Variable components | 1% |
| NPCs | |
| Items |
 Black cog Red cog Blue cog White cog Rat poison |
| Locations |
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| Music |
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| Miscellaneous | Quick guide • Transcript |
