The object of this puzzle is to separate the two linked keys. Try it without looking at the solution provided, and you will find it a very intriguing puzzle. This model is made of plastic, (each Key is about 2.75″ long), attractively boxed, and complete with the solution. We bring you the item at a very affordable price, along with special bulk discounts for those that wish to use this as a promotional or pitch item, or a give away. It will appeal to all people, and not just magicians.