Physics is a practical science. Learn principles and conduct experiments with these Magdeburg hemispheres kits to study physics. These Magdeburg hemispheres toys are not , but can also enhance students' observation skills, stimulate questions, etc. Features -Color:Sky-blue -Material:Plastic -Size:12.00X4.00X2.00cm/4.72X1.57X0.79in -Size:5.00X5.00X4.00cm/1.97X1.97X1.57in - Magdeburg hemispheres toy is an educational toy to teach knowledge for your kids, enjoy fun and learn knowledge. - Magdeburg Hemisphere toys for youth ages are suitable for children's birthday, holiday, Christmas gifts. - Magdeburg hemispheres is a practical science toy, the enhanced learning, clarification and consolidation of theory. - Magdeburg Hemisphere toy allows your children to grow up happily in the game, bring them of . - with your kids, not only teach your kids something new, but also improve your relationship. Package list: 2 x Sets of Magdeburg Hemispheres Experiment Instruments