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.