A very intellectual puzzle where you can keep either 4 coins / tokens or any small object in a transparent plastic box & ask the spectator to remove them (by opening the lid of it). We are very much sure that, you can easily bet on it. Very attractive looking puzzle. This box has metal rods linked in the lid of it which makes it practically impossible for any one to open the lid of it. But magician or any person after knowing the secret can open it within a second. We very strongly recommend this to one & all, as you can use it however you want. Very simple but..... will make your audience go nuts till they know the secret. GRAB IT NOW.....