Skysteel Cross-pein Hammer +1 - NPC vendors
Paying with
Skysteel Cross-pein Hammer + 
20× Oddly Specific Rivets
| Zone | NPC | Shop | X | Y | Cost | Teleport |
|---|---|---|---|---|---|---|
| Foundation | Denys | Skysteel Prototype Augmentation | 8.0 | 10.1 | | Foundation → Skysteel Manufactory |