1. Material: plastic 2. Safe material, durable and durable, children play more peace of mind 3. Combine toys with scientific principles, make science more simple and interesting, let children love science 4. Improve children hands-on ability and exploration spirit, suitable for school and home teaching 5. Training children practical ability, hand-eye coordination, exercise thinking, develop intelligence, inspire creativity, explore science 6. Weight: about 150g 7. Size: about 12 x 10.5 x 5.3cm
