Dual wielding with the weapon master passive

When dual wielding and using the weapon master passive, does the off hand weapon receive a benefit from the passive? For example, if I'm using two maces does it increase my total chance to critical by 20% or does it increase each individual weapon's chance to crit by 10%.

Solution 1:

What the tooltip says is, if you wear a mace in your main hand then you get 10% crit chance. So each attack (doesn't matter if it's your main or offhand has an additional 10% chance to crit). When you wear a mighty weapon in your main hand, each hit gives you 3 fury. Also if your off hand is a dagger.