Ninja Rocks

stealththief · Post by **stealththief** » Thu Apr 16, 2009 9:27 am

Not sure how long people have been using these but they seem awesome. Does anyone know if it only works on car glass or if it's for every kind? Also where can you find spark plugs?
If you don't know what ninja rocks are check this:

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http://www.ridelust.com/obscure-burglary-tools-of-the-day-ninja-rocks/

Post by **Ghost** » Sat Apr 18, 2009 6:28 am

Just a little addition - I've never used ceramic from a spark plug, but i did once try a piece of ceramic dishware, and it didn't even scratch the glass.

Borninshadows · Post by **Borninshadows** » Sun Apr 19, 2009 6:21 pm

You need Aluminium oxide ceramic, as it is harder then both glass and regular ceramic; this is found on the page with the video.