Review (5/5): Great for regular keys that do not have the electronic chip in them.
These work well for FLAT KEYS. My patient loves them for his house keys. We were actually looking for something for his car key, but this product will not work on that because the key has a thick part due to the electronic chip in it.
Pt. is very happy with product though for his regular keys. He has severe CTS and has significant numbness and tingling and loss of strength in his hands. He is now able to lock/unlock his house doors with ease.