Marsrut 5MM Magnetic Block Ball Cube Magnet Sculpture Stress Relief for Desk Fridge || Metal Box to Storage Creative and hot puzzle for enhancing assembly ability. Improve intelligence and imagination. Practicality: makes the game more interesting in your hands. Also be suitable for office use, used for creativity and craft decoration on your desktop and fridge Quality Gift - CPSC certification - Using reliable material, non-toxic and harmless with gift box. A great holiday or birthday present. Also can be taken for traveling. WARNING - Bucky Rubix 216 PCS of 5MM is not suitable for children under 14 years . Flux index less than 50