9pcs/Set Metal Montessori Puzzle
9 kinds of interesting interlocked rings set to offer freshness and fun all the time.
The product with appropriate hardness, a smooth turned door, and without burr, which is harmless to the hands and safe to play.
It helps to exercise the brain, improve problem-solving skills, relieve stress, and more.
A good choice to train your brain in any free time or send as a gift to your friends.
