https://bikerumor.com/found-tatze-blade-flat-pedals-are-just-3mm-thick-w-bearing-housed-in-custom-crank-arm/
Tatze Blade is the World's thinnest MTB pedal at just 3mm thick! We take a closer look at the pedal-crank integration and double-sided pins that allow it.
flat pedalsfoundbladethickw