I thought it was the Med Preps which were thicker.
So are you saying there are two versions of the Med Prep, one of which is 0.006" and the other is 0.004"??
I believe it was the Personna Labs (blue package) that was .006 thick. I don't know about the Med Preps.
[Update] I forgot I had a micrometer. I just measured a Personna Lab blade and it is .004 thick.
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