I have not used these yet, and I hope I do not have to. I only bought these as a precaution. You can never know if you will be in a situation where you would need these or not. But I am glad to have them just in case.
They are rather big so make sure to have room for one in your glove compartment. But I like that they have some size and heft to them. Makes them feel like they have a good build and quality.
My husband and I currently share one car for now but I like how this is a 2 pack. I can gift one to another or save one for when we finally get a second car.
If you are wanting to have an escape hammer to be prepared these feel like they would do the job.