This precision made coin is Manufactured by Roy Kueppers and comes with instructions for two routines plus ideas for many more uses.

Pseudo-Flurry;
A coin is produced from your sleeve. It jumps from hand to hand, penetrates your knee and then vanishes without a trace

This coin work perfectly with devices like The Bat and other similar devices. If you have a magnet stuck to and concealed in each hand and TWO steel core coins, you can do a no-sleight handling of the Coins through Table by Gary Jones from the iCandy DVD. If you tape or glue a thin neodymium magnet inside your card case and using a duplicate coin, you can use the box to tap a steel core coin, causing it to vanish and reappear inside the card case, inside your pocket or you can cause it to apparently penetrate your hand, etc. This can also be used as a holdout for a coin. Using a PK ring, a steel core coin and three matching regular coins, you can use the One-Ahead Principle for an easy-to-do Coins Across.