Well made, smooth and non-fragile metal, a nice selection of models. Includes 16 different metal game designed to test your brain, patience and coordination. Enjoy hours of fun with your family and friends. Try to separate both parts and impress your friends. Suitable for everyone, especially for those who like to challenge. Some of the same principles apply to most others, but they are different and the resolution of one does not mean you have solved another solution. Durable and well made. No tight curves. So much fun for your Christmas party. Everyone will try to solve these puzzles. An absolute success for the older crowd