Do weapon Pyro/Lightning/Frost augment tempering bonuses stack?

I have currently a 2handed weapon
Weapon augments have a chance to cast a specific skill (Firebolt, Fireball, Meteor, Chain Lightning, Ball lightning, Frozen orb, Blizzard ect) twice.

But what if i use a 1H weapon + Focus and use the same tempering augment on both?
If i had for example 50% (i know there isn’t such a big chance but let’s use it for the sake of example) and both item chances proc, will it cast 3 Fireballs/Lightning ball/Frozen orb ect?

Anyone tested this one already?

I does stack. You can verify on the stat tab.

**I do not assume responsibility for any Blizzard math

1H/OH combos do stack. And because they’re tempers, they can receive a masterworking crit as well. That happened with one of my % to cast FO twice tempers.

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Thx for the answer guys.
Yeah since it is 2H vs 1H+OH, the probability % are hjalved, but i just tested it and it is just a feeling, but i feel like these 2 15%+14% chance is procing less often than the 29% chance on the 2handed weapon. Even with the faster attack speed taken in consideration.
But that is just a feeling since it is chance based.

I just got my focus up to 8/12 MW and the first crit was on the GA’d +resource and the second crit was on the chance to cast FO twice. So now both my slots have enough chance to cast FO twice to put me above 50%. Now even at 50% you can still run into some really dry streaks and other times you can hit some gnarly streaks of double casts (triple or quadruple if one or both of the simultaneous FOs casts a conjuration and that conjuration triggers a free FO cast respectively.

Sometimes it’s nomalicious and sometimes you just get nom’ed.