<br>Age 14+ <br>The Chinese Rings Puzzle is believed to be one of the oldest puzzles known, dating back to China over 2000 years ago. We believe that what makes it so popular is that it cleverly combines both logic and creative thinking. <br>The most representative of Chinese classical intelligence toys <br>Practice the brain, logical thinking ability and finger muscles <br>It also can cultivate the spirit of work study focused and your patience <br>Size:as the picture shown <br>Package Included: 1 x set of 24 pcs Metal Ring <br>Brain Teaser Puzzle