5 December 2015
Fred (no surname given) pointed out that tamperproof torx size 40 hadn't been included, a size which, according to Fred, is common on Italian motorscooters. In confirming Fred's information, we discovered two additional, even larger TT sizes are made.
6 October 2010
Steve Ignots called attention to problems with the description of the Tamper-Resistant Torx Plus.
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Last revised: 12 January 2016.