This tensegrity table have educational significance, analyze the forces by physics to understand how the tensegrity structure science toy works. Made of high quality solid wood material, formaldehyde free, safe and environmental protection, fine production, hand grinding, smooth paint. Simple assembly, solid wood with stainless steel chain, interesting, uniform force, can bear 1KG, designed based on the idea of tensegrity, seems impossibe but it's real. It not only suitable for desktop decoration but also available as a little desk, best gift choice for adults,colleagues,and friends. Attract your friends' attension when you put the science toy on you desk. Colour:Wood color Material:wood Size:12 x 13cm Package Contents: 1 x Tensegrity Structure Toy Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.