8 different styles-This product contains 8 styles of metal puzzles. These puzzles are classic and popular, making them perfect for kids and adults. Metal- High carbon steel with high toughness and strength, making these intellectual toys resistant to falling and stretching. A single transparent case makes it easy to store these items and easy to find.Improve intelligence- These different problems have different difficulties, and all the problems are very interesting, which is good for improving your IQ, EQ and your creative thinking. A fun and challenging puzzle game. It seems impossible to separate, but it is possible to remove. At the same time, the product is non-toxic and environmentally friendly.Easy to store- Metal puzzles are the right size for playing and carrying, and can be played in most places. It's a great gift for all ages. It helps children to exercise their logical thinking and working ability and release adult work stress effectively. cib.jpg