The Ultimate IQ Test Set of 3 Metal Puzzles by Professor Puzzle is a challenging and engaging toy designed for ages 12 and up. These irregularly shaped puzzle boxes are made of durable metal, featuring a sleek silver color. The puzzles are compact, measuring 3x3x3 inches each, making them perfect for on-the-go entertainment. With a focus on strategy and problem-solving, these puzzles are sure to provide hours of fun and mental stimulation for young adults and adults alike. Made in China in 2016, this set is a great addition to any puzzle enthusiast's collection.