Stop in for a cup of coffee

Tool question guys. Is there different Torx for metric? Working on my VW yesterday and stripped two Torx fasteners. Was I using the wrong tool? I never stripped one before...
"The same series of Torx drivers is used to drive SAE, metric and other thread system fasteners, reducing the number of bit sizes ..."

Wiha TORX Dimensional & Screw size Specifications | Wiha Tools USA