The OmniWrench 8000 was a Gadgetron weapon (technically an item) used to repair things, turn bolt cranks, or even injure enemies. It was also magnetized and so it can pick up bolts.
The wrench was a very multipurpose item or weapon. It can kill and injure enemies with various combat moves, and it could be used to grind down zip lines or turn bolt cranks. Ratchet used it to work on his ship in many cut scenes as well. Because it was magnetized, it could pick up bolts and Raritanium. After a special item was found, by performing a Hyper-Strike, all boxes and breakables would break, and the bolts would be collected. This was very useful for mass bolt-collecting or when surrounded by vegetation. The Comet-strike was useful also, as it could also break boxes and bomb crates from afar without getting hit.
Ratchet & ClankEdit
It was unknown where Ratchet acquired his OmniWrench, but he was first seen using it to create his ship and the Bomb Glove came with the Wrench as an added bonus. After he met Clank, he set off on an adventure using his wrench more as weapon than a tool. He also used it to threaten Chairman Drek's Robot Lieutenant and turn bolt cranks.
Ratchet & Clank: Going CommandoEdit
When Ratchet was transferred to the Bogon Galaxy, he continued to use his wrench as a weapon. During his adventures, he found many upgraded, more powerful versions of the OmniWrench 8000. He found an improved version of his wrench in a cave on planet Tabora. It was colored blue, had orange highlights, and sharper teeth. On the Thugs-4-Less Prison above Aranos, Ratchet found a third wrench that was colored reddish-orange with teeth similar to the first wrench. Each one was more powerful than the last.
Ratchet & Clank: Up Your ArsenalEdit
In Up Your Arsenal Ratchet used the OmniWrench 8000 V3. However, the power of the wrench increased as Ratchet upgraded his nanotech, noticeable by the change in the streak from when he swung it. Also a cheat let you change your wrench to the Dual Laser Saber.