&lt;p&gt;&lt;b&gt;Spring Balls&lt;/b&gt;&lt;/p&gt;&lt;p&gt;A compressible ball which can be used for vanish or production.&lt;/p&gt;&lt;p&gt;Magicians use this ball for production purposes. Designed for the Crystal Ball Casket, you can also produce this from a lantern ball, mirror box, triangular box, etc. or just have many of them jump out of your hand.&lt;br&gt;&lt;/p&gt;&lt;p&gt;Compressed the ball is about 1/2&Prime; and after releasing it becomes approximately 4&Prime; in diameter&lt;/p&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;