Carbon Stick
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The Carbon Stick is a building material in Arknights.
Item description
A carbon stick used for the facility development of Rhodes Island.
One of the necessary industrial materials, it can be used to produce a variety of polymers.
Usage
This stick of carbon is needed for the production of lightweight polymers for 
Light Building Material needed for the construction of Rhodes Island infrastructure facilities.
A single Carbon Stick is also worth 4 
.
Acquisition
Store
5 Carbon Sticks are sometimes available for purchase at the Credit Store for 160 
.
First clear reward
| Operation | Drop(s) |
|---|---|
| 0-10 |  6 |
Regular drops
| Operation | Sanity | Drop(s) | Sanity per drop |
|---|---|---|---|
| 1-9 | 9 | 2 |
4.5 |
| SK-1 | 10 | 2 |
5 |
| SK-2 | 15 | 4 |
3.75 |
| SK-3 | 20 | 1 |
20 |