From the Manufacturer This incredible set includes enough components for two children to play spy. Contains cipher wheel, message capsules, color encryption notes sheets, invisible ink pen and much more. Product Description Learn how spies communicate in their secret world. More than 40 components in all. Each kit completes with sufficient contents for 2 kids to perform more than 8 ways of secret messaging including Morse Code, Stick Code, Invisible Messaging, Cipher Messaging, Colour Encrypted Messaging and more. Contains 2 sets of Super Spy Secret Message Kits for 2 kids playing together. Each Kits contains a handy plastic case for storing all secret message devices, a Morse code flashlight, an invisible message writer and developer, a built-in cipher wheel, 2 message capsules and paper stripes for Stick coding, 6 color Encryption code sheets, 1 secret code library, 1 Spy International ID card & detailed instructions with fun facts of different secret message codes and devices.