While these hooks hold my tools in place if I don't touch them, the hooks don't always stay in place when removing a tool.  It gets really annoying to have both a peg and clip fall along with your tools when you grab them.  The whole point was to keep things in place.  I would say they work about half of the time.  If I am very careful about lifting them out of their place gently, they tend to stay in, but even then some of the clips still pop off leaving the hook in place but still need to fumble the plastic clip back into place.  Not what I wanted.