I bought one of these a few months ago for the purpose of being able to detect "cloned" keys on Fords. This is important in my job, many Ford programming events require two unique keys and if one key is a clone of the other then the vehicle thinks they're the same key. I've found it very effective for that, you read both keys and see if the "Response" string matches or is different. A match means you have a clone.
How I wish these were being made about 20 years ago!!!!
It's a simple yet brilliant idea...19 mm two pound impact socket for breaking free crank pulley bolts. The extra mass truly makes a difference in the effectiveness: think "bigger hammer".
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