THIS IS A STAMPED SCHWINN CRANK NUT THAT FITS MANY SCHWINN 1950S, 1960S, 1970S, 1980S BIKES AND OTHERS. SCHWINN HAS A THREAD AND SIZE LIKE NO OTHERS, THIS IS A MUST NEEDED FOR YOUR CRANK. THIS ITEM RIDES ON THE BEARING. THIS IS USED BUT IN GREAT SHAPE, I CLEAN THEM MYSELK SO ALL YOU HAVE TO DO IS INSTALL IT ON YOUR SHOW OR RIDER BIKES. WE HAVE OTHER PARTS FOR THE CRANK IF NEEDED AND COMPLETE CRANK SETS.
LLW