Review (1/5): poor cutting
I bought these because I was desperate. Bad choice. They seem to pinch more than cut, and my dog was jumping with every cut. I have since found my old Fromm scissors and re-trimmed his feet with them and no jumping. I believe these are pinching or pulling the hair as much as cutting.
Update, upon closer inspection, I now know why... see attached pic...and yes, the screw is as tight as it gets