'Wrench' Redirects Here. For the BuildCraft Wrench see: Wrench (BuildCraft)
The IndustrialCraft Wrench is used to dismantle machines and rotate the output faces of energy storage devices, such as a BatBox, MFE, MFSU and Transformers. To dismantle or change the output face of a machine, simply right click with the wrench. Using any other tool to dismantle a machine will result in only dropping a machine block.
Additionally, there is a 20% chance, even when using a wrench, that your machine will not return itself. Specialized generators may return a normal Generator, and other machines may return a Machine Block.
An alternative to this wrench is an Electric Wrench, which performs the same functions without losing durability, requiring EU to function. The Electric Wrench also has a "lossless" mode that will always return machines intact, but it requires a lot of EU.