Educational & entertaining - Our 36 different metal puzzles are brilliant to encourage kids & adults exercise logical thinking & hands-on ability, improving spatial imagination & creativity. Guaranteed to be highly educational, developing intelligence & brain power, whilst also entertaining at the same time. Face the challenge - Each metal puzzle is completely unique, in 36 different designs, ensuring great challenges all round, each time. Despite its apparent difficulties in solving the puzzles, rest assured that the satisfaction of a job well done, makes it all worth while.