I had a flat tire last week, never changed it, used the wrench that came with the car and couldn't get the nut off even pounding it. wrench! I called someone to fix the apartment and noticed that he used a very large wrench and he seemed to be able to tighten the nuts with no problem. I immediately decided I needed a large diameter wrench. I checked out the wrenches at 2 local shops but I wasn't impressed with their manufacture. The two pieces were welded together and I was concerned that I might break the wrench if I had to use a hammer on the wrench to loosen the nuts, so I went to Revain to find a professional wrench. Thanks to the reviewers, I learned that I need to measure the collet nut diameter in order to order the correct wrench. I've never heard of the term 'fake' but thanks to a reviewer I realized I'd like the key to be made that way. Today I received the key, I had to try it. Even for a humble woman, the nut moved with ease. This wrench should be in every woman's car and every woman should know how to change a tire. I will never feel helpless again when I have an apartment. This key is the bomb!