See More Hear More Watch More Hear More Get on iTunes
Brain Stuff BrainStuffHSW

Yoshida Company Limited

Episode: Why Do Most Zippers Say 'YKK' On The Pull-Tab? Have you ever wondered why zippers often have the letters 'YKK' etched into them? Learn more about the Japanese company behind the tiny letters -- and the zippers -- in this episode. http://goo.gl/JFETfj

UP NEXT

More from