Stronglight 3 piece square taper vintage road bike cranks threaded for 9/16 pedals. 170mm 122bcd 42t chain ring. Fresh full polish with anodized chain ring bolts and mounting hardware ready for show or go, they're pretty clean. Super Maxy is cool, Japanese cranks are king on old school bmx bikes but I'm an outside the box kind of guy and definitely like to run so etching a little different so sure you can throw these on your fixie or road bike but I repurposed them for a bmx build and decided to offer them up to some lucky buyer.