One of my hesitations on buying this is I wonder if it will really work - that is, will it break a window? I was thinking of buying a small Wonder bar or pry bar. But at $8.00 for two it won't break the bank if it doesn't work, but how will I know if it works? I don't even know if a pry bar would work as I am not in the habit of going around breaking car windows. :-)
Does anyone know if this will reliably break a window? I suppose I could go to a junk yard and ask if I could try it out.
There is a Youtube demo here:
http://www.youtube.com/watch?v=wimk4PeyG7YIt seems to do the job, but believe it or not I don't always believe everything I read or see on the internet.