Chain Behaviour

Any prototype to make same chain behaviour like in the video

https://www.google.de/search?q=unity+chain+physics&prmd=visn&source=lnms&tbm=vid&sa=X&ved=0ahUKEwjb6MWt2bXWAhUJU1AKHVbJDD8Q_AUICSgB&biw=360&bih=512