A valve core tool for the workshop. A good number of similar tools are made of aluminum, we make ours from tool steel. The only reason you should ever have to replace this is if you lose it.
And that should be fairly hard to do given it's size. At about 80mm long and 10mm in diameter it's big enough to feel good in even the meatiest hands, big enough to not get lost in the bottom of your toolbox, and still small enough to easily work within the confines of a wheel.