Johnson Products new Ultimate Expanded Shell is "the last expanded shell you will ever buy" because it is the best expanded shell you will ever buy. After years of experimenting, Johnson has finally produced the Ultimate Expanded Shell. This is not just an "improved version". The technique for expanding the coins is totally different from anything used in the past, and is nothing short of revolutionary. Only one coin is used. Nothing is added, therefore nothing can become loose or break. Set the Ultimate Shell on the table with some regular coins, and you will not be able to tell the difference. Until it actually covers another coin, you will simply not believe it is an expanded shell. David Roth says "The finest shell in modern times ... beautifully made."