This coil puller is ideal for removing and installing valve inserts. I like that there is no extra "T" tool attached to it, making it difficult to rotate the tool without hitting the spokes. It fits my fingers perfectly and allows me to quickly rotate and remove the valve core without encountering obstacles such as spokes. I removed a star because this tool is small enough that it needs to be pre-drilled with a wrench. a ring or strap to attach it to something larger so it doesn't get lost. I think I could do it with my drill press, but it's too much work. I'll just keep an eye on it...