I very rarely become evangelistic about a piece of plastic, but these tyre levers are simply perfect. I've used, and broken, dozens of other tyre levers in my days. These levers are perfectly shaped for the job, with none of the harsh angles of a standard lever. They hold in place perfectly, and despite all my best efforts, I've been unable to break a single one of them.
I know, it's just a piece of plastic, but these are very good pieces of plastic.