Ever since Tony Andruzzi presented his Exploding Flasks, glass shattering effects have been very popular with mentalists and bizarrists alike.Imagine displaying an empty glass Coke bottle; banging it on the table and even hitting it with a mallet to show how strong the glass is. Then, asking the audience to aid you in a collective experiment ……… of the mind. You ask the audience to concentrate their thoughts on the bottle and to think….. NOW, over and over in their minds. Within a few seconds the bottle seems to vibrate, seems to move and shake ever so slightly and then….BANG! The glass bottle shatters into hundreds of pieces.This is a REAL glass bottle. Yet the experiment is under your complete control. The bottle is never hidden, always in view, held at your fingertips inside a clear plastic bag.The shattering is crazy, explosive and magical. You do not use special tables, spring loaded devices, etc. Comes complete ready to perform with detailed instructions.Sold in lots of 3 bottles per order. Empty Coke Bottles.