Pickaxe II

The equips to the  slot and is used when collecting stone and mining deposits. The must be forged at the anvil II by the player and isn't available for sale.

Efficiency represents how much progress toward an operation each swing of the axe provides. A 100% efficiency would cause something to progress at the normal rate while 200% would mean it progressed at twice that rate. The has an efficiency of 150%.

Energy usage represents how much energy each operation consumes. The requires only  per swing.

Studying at the Study table will give you.