The effect

A double back & informational card are also included

They won't be able to free themselves

X9: guess a number only thought by the spectator

Sandwich this

EquivoKey- Pro (Poker Chip) | GRUM® Glocke The effectEquivoKey Pro (Poker Chip) by Ari Phillips & Sean Jackson Powerful, impromptu effect using a coin, business cards & your keys. A perfect EDC you can have on all the time to perform a simple which hand effect, optical illusion, and mind reading miracle anytime, anywhere, while also leaving the spectator with your contract details. Comes complete with a specially printed poker chip you are also able to present an awesome optical illusion to make money