Materials and rewards

Emerald Drill (Armor)

A legendary item that unlocks the 4th socket on your armor.

Sources

◇BossesDeath ReaperLevel 78↗ Event ChestsGolden King's Loot↗ Boss ChestsRazador Chest↗ Boss ChestsNemere Chest↗ Dungeon ChestsSpider Baroness Chest↗ Event ChestsGolden Okey Box↗ Materials and rewardsArmour Upgrade Bundle↗ Materials and rewardsComplete Upgrade Bundle↗