Features: brand new and high quality A great DIY Toy kit for kids to understand basic phystics knowledge. A sense of accomplishment inspires children's thinking and lays a solid foundation for their future. Explore the wonders of science through a hands-on science experiment. Made of natural wood, eco-friendly, non-toxic, smooth without burrs and durable for long-lasting use. This kids experiment set will satisfy you little budding scientists' curiosity, open their horizon, find a brand new world and have great fun in spare for time. Package Includes: 3 Package(A/B/C Optional) Package A:Grade1-2 Package B:Grade 3-4 Package C:Grade 5-6 Specifications: Material:Eco-Friendly Wood Size:Approx.37.5x21.5x10cm/14.8x8.5x3.9in note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.