NASA states that “our specially trained handymen are astronauts, and they need specialty tools to accomplish out-of-this-world tasks.” The problem is that the astronauts have to take so many tools and they weigh a lot. If they used the BTB tool, as a way to save space and have four tools in one. The BTB tool is better than just using one tool and taking up so much less space and mass. The two sides of the screw are used for a big and a small wrench. These several tools on the BTB can be used for many purposes, including tightening bolts which are different than those used on Earth. To use the driver, the astronaut needs to attach the small loop and use the tether to attach it to the astronaut. The astronaut will take the part that acts as the hammer or wrench and use the two rods and put them into the box.