Three balls are placed in a covered clear tube in traffic light order (red, yellow, green). When the tube is removed the balls are always out of order. When the green and yellow balls are placed into the tube and covered, the red ball is placed into a decorative box and made to instantly vanish. The ball appears inside of the tube with the other balls -- now in their proper order. Quality apparatus. Self-working. The box can be used to vanish objects other than just balls. Great for safety themed shows.