The ko 2 max is suitable for all cyclists whether they are enthusiasts touring cyclists advanced riders or even competitors lightweight and equipped with a stainless steel contact area and a high quality spindle it is a pedal that is both reliable and efficientchromoly axle spindlethe ko 2 max spindle permits the conservation of a low stack height even with its steel oversized axle it is built with miniature ball bearings 4012 mm inside x 18 mm outside41 and a needle bearing cartrid