The two or four pronged tools and BMX four pronged tools need to be held in place by either the Quick release or the axle nut. The tool only needs to be held tight for only the first 1/4 of a turn when you are loosening it. After that you can unscrew it with your bare hand.
I have had my Suntour tools for 23 year and used them in four bike programs
on a couple hundred bikes, I have only broken one. It broke into five pieces
when three of us tried to break a stuck freewheel off a bike. Always use anti
seize on your threads where two dissimilar metals come together, or grease if
you do not know about better products.
Suntour tools should never slip if they are used correctly.
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