A Monkey Wrench and a regular wrench mixed together. This helps the international space center because on Future engineers the tool box had about 10 wrenches and screw drivers. With my tool you can have 5 of these and you will be good to go. You can also save money, a regular wrench cost about $10-$20. The wrench has different sizes and so does the screw driver. If u need a different size screw, you just take the one out and put another one in. For the Monkey wrench you just have to turn the spiral and it’s a different size. They use the wrenches and screw drives if something goes wrong and preparing on the spaceship to go to space. The mechanical engineers and the math engineers are the most important people when launching a rocket ship into space. The mechanical engineers build everything so they need tools to work with! The mathematics people calculate where the spacecraft will land. My invention has a good grip so when working with it for a long time it’s always comfortable.