The magician casually displays a bolt, nut, metal housing, and a steel ball bearing. The bolt is threaded through the housing and the nut is additionally threaded onto the bolt. Next the steel ball is placed into the top of the housing and thus on top of the bolt. With a bit of magic, the steel ball mysteriously “melts” its way completely through the bolt! Beautifully made out of brass and the machine work is exceptional. 027RUMMRMSTEELBALL