Improved Tinkering
From Twilight Heroes Wiki
Go to Gadgeteer Skills (level 10 skill, trained at the Training Room)
Improved Tinkering
With this skill, you will have better options for improving your weapons and armor.
Effect
This skill changes the options available to you when using the skills Upgrade Armor and Upgrade Weapons.
After you acquire this skill, the options you can choose from when you use Upgrade Armor are changed to the following:
And the options for Upgrading your Weapons are changed to: