Rust Manual

Workbench Upgrade (High)

2 possible drops, resolved through every nested sub-table down to real items.
Accelerated Workbench UpgradeAccelerated Workbench UpgradeFun1x50%
Salvage Workbench UpgradeSalvage Workbench UpgradeFun1x50%

Chance the item is included whenever this table rolls. Approximate — doesn't account for seasonal or event-restricted rotations.