This tool can be used to help control the speed of how fast the astronauts can go in space. How it works is , you have to push on the cylinders to slow it down. If you need to make it go faster, the legs should be placed on the triangle wedge.If you cannot control the speed
using your legs, then you can use the remote to control it. It is similar to brakes in the car. This tool can be used both for moving around or even for exercising the legs.