Screwed Coin BoxScrewed Coin Box is an innovative yet traditional coin box. Compared to traditional coin boxes, Screwed Coin Box is the only coin box that the lid can be screwed onto the box. It is a true innovation. The coins can be transferred into the box and outside the box when the lid is screwed on the box. So, the spectators will feel the effects more impossible. We can let the spectators to screw the lid themselves, and magician can open it secretly very