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|Mod||Extra Utilities 2|
Upgrade Stack is a category of upgrades added by Extra Utilities 2. They can be used in transfer nodes. Only one upgrade can be applied in a transfer node. When added to a transfer node, the node can transfer one stack of items at a time, depending on what the item's stack size is (enderpearls have a stack size of 16, so only 16 would be transferred at a time).