Intelligence game toy: Our 8 different metal puzzles toys can test your brain and patience by solving how to separate the two pieces. They are a great way to keep children amused and quite challenging of mind games for adults to work out too. . Cracker fillers: The brain teaser puzzles toys are ideal stocking fillers over Christmas and would be good for party bags, (This set of small but great varied brain puzzles of different complexity, )Will keep people scratching their heads at the magic themed party. . Durable: They are good quality puzzles toys which made of high carbon steel electroplated nickel silver, no sharp edges to keep your children safe, and have stood up to a lot of pulling about. . Safety warning: Children under 6 years of age please always ensure that it is used under adult supervision. . After-sales: If you are not satisfied with our products , just return them for a full refund. .