Wrench

The Wrench is a tool.

Usage
You can use the wrench to add and remove module while it is equipped. Left click to add module while facing an empty wall, and right click to remove module while facing the module.

Another use for the wrench is to repair the walls/modules that gets damaged. You can left click the module while having a module repair kit in your inventory and watch the percentage go up. The durability of the kit will decrease as you use the item further.