Wrenches

Wrenches are a currency exclusive to Scrap Clicker 2, unlockable at x100 Stars through the Skill Tree.

Obtainment
Once unlocked, each merge awards the player 1 Wrench. At x105 Stars, the player can then purchase a Tree Upgrade which increases Wrench production so that each merge is worth 0.1 more Wrenches than the last.

Spending Wrenches
Wrenches are primarily used in the Scrapyard v4, multiplying Brick production by 4 with each level.

Wrenches can also be spent in the Skill Tree to increase Scrap production, Steel Beam production, and unlock Tires.