about the entry on
screw drive

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.