So after receiving this key I first tried to use it as is. But this first test, as I feared, was not successful; so I did not insist because I do not have a Herculean strength. Additionally the 2 negative reviews on this site, indicating that the arms of the T are not stronger, made me cautious.
To properly use this key, without undue effort, I simply stretched an arm of the T. For this purpose I used a hollow tube that I put on the arms of T. In this case the hollow tube was an old spark plug wrench (but who had not the right size).
As Pascal said (if I remember correctly) "Give me a lever and I will move the world" ...
I therefore suggest the manufacturer to provide a hollow tube for leverage or at least indicate on the package insert that the key can not be used easily without using a lever.
