Working. Logically, without reading the instructions and never removing the large dual sport tire, they allowed me to break the bead with minimal thought. Not only are they great as bead breakers, they can also be used as tire shovels. So if you're using them to build an emergency tool kit, they're a smart choice. I don't regret the purchase one bit. - By the way, if you've never changed a tire yourself, do yourself a favor and train your garage safety. It's doable, but hard work. Previous experience before a real emergency occurs can come in handy later, so you know in advance that you have all the tools and knowledge you need. I also bought a Motion Pro 08-0286 10" T6 combo arm to do this and it's a very good thing.