Pancreas Keychain by I Heart Guts Sweeten your keys with this pancreas keychain. Engraved back of keychain and display read: "Pancreas: Insulin For The Win" Cool facts about your insulin factory included on the cardboard backing. Zinc alloy with soft enamel, pancreas measures 2.6" x 1.5". I Heart Guts puts a smile on your face and smarts in your brain.