Actually it works pretty good, ( you really need to bang on the socket with a very large hammer to get it on, and use only hand tools to remove the bolt) but since at the time I worked on cars for a living I eventually bought a kit just to remove them from cars. Messing up Snap On sockets got a little expensive.
Another method is to just get any Porsche key and grind out the the inner lugs until it fits. Make sure you only use hand tools to remove and install bolts, thats how most of these get damaged
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