These are External Torx Plus not Torx. Torx plus is a special profile to fix automotive Torx plus fasteners that manufactures are switching to. Using a regular Torx on a Torx Plus fastener will be a poor fit and damage the fastener.
Nine of the Most Popular Torx Plus® Socket Sizes for
Automotive Applications.
External Torx Plus® applications include body panels on
newer Ford trucks with aluminum bodies and seats on GM
trucks.
This set uses 1/4", 3/8", and 1/2" square drives.
E6 to E18 sizes