Witherbark Tusk

Source
This item is dropped by the following witherbark trolls in Arathi Highlands:
 * . Drop rate 30%.
 * . Drop rate 31%.
 * . Drop rate 32%.
 * . Drop rate 33%.
 * . Drop rate 34%.
 * . Drop rate 35%.
 * . Drop rate 36%.
 * . Drop rate 40%.

As a quest objective
This item is an objective of Worth Its Weight in Gold.