I am about to do a spark plug change on my 99 e320 and have been reading about the trouble with getting the plug wires off. I found this tool using a google search.

http://www.samstagsales.com/images/hz2771.jpg

Anyone ever used it or know anything about he company Samstag Sales?

Or am I just as well off with a 17mm open end?

Thanks,

Rondo