Originally Posted by
smontanaro
For future reference, I believe Phil made thin wall tools for a couple freewheel types. I'm not sure which ones, but I have one for splined Shimano freewheels.
They were fragile. You had to use them very carefully, and even then, they would still fail. They were the best thing in some situations such as the original small-splined Shimano freewheel, because the only way to use a standard extractor was to remove the axle from the hub, and that was something mechanics wanted to avoid.