I purchased these tire levers because I had previously broken a pair of much flimsier levers. These levers appear to be made out of very hard plastic and don't bend easily by hand. I liked them at first. Sadly, when actually using them for the first time to fit a tubeless Conti tire on my rim (very tight), the tip of one of the levers chipped off under stress. Shortly thereafter, the second lever's tip bent as well, so it's no longer usable. I'm now stuck with one lever which isn't very useful. These levers probably work well enough for tires that fit loosely or are average tight. For anything beyond that, you may want to look for something sturdier.
These cheap plastic things are too weak and not shaped well enough to change a flat tire on my bike. They literally could not change the flat and I had a bike shop mechanic using them, so it wasn’t the person using them that was the problem. Get metal ones or other plastic ones