This tool is made of metal (steel,iron, doesn’t matter) it is small enough to fit in my hand and is pretty light. This tool is used for routine tests. This tool is used to make sure their reflexes are still good in case they end up in a risky situation
The material is metal and we can print metal objects currently. I chose this material because it then can be multi beneficial.This object requires no assembly and can be used as soon as it cools. This tool will not need to be reprinted and can be used over and over again. If you can break down metals and turn it into wire again then yes it is reusable. You could use the knee hitter as a hammer and break something or hit something.