It takes a lot of muscle to get them out. You wont strip them. Just use the 10mm hex head and make sure its in there good and start loosening. You'll be tired by the 5th or 6th one. By the 3rd one I was dripping sweat. But thats only because i didnt have a breaker bar. And use craftsman tools to get them out so if u mess it up u can take it back and get another one. I broke the ratcheting mechanism on one trying to get them off.
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