DescriptionThese magnetic blocks have an exceedingly strong attraction to one another and to other ferromagnetic objects、 subject to factors such as the size and shape of the magnets Main FeaturesThis is an amazing intellectual toyGreat for training your imagination and creativityCan be used as an educational tool for childrenAlso a good gift for friendTip1. Strong magnets should keep away from ironware and some easily magnetized iron products、 such as monitors、 bank cards、 computers、 televisions and mobile phones2. Strong magnets should be stored in a dry environment3. Magnets might affect some metering equipment' performance、 such as water meter 、 electric meter、 gas meter Type: Intelligence toys Age: 8 Years+ Material: MagnetFeatures: Educational Puzzle Style: 3D Puzzle Package Contents: 216 x Square Magnetic Block