Features: Experience the mesmerizing motion of the Newtons Cradle Balance Pendulum, a captivating physics toy that showcases the Energy Conservation. Crafted with metal materials, including metal balls and a durable plastic base, this Newtons Cradle is built to last and provide relax hours of entertainment. Suitable for both kids and adults, this educational toy is perfect for learning about science and physics while having fun. Whether at home or in office, this Newtons Cradle makes for an excellent desk decoration and stress relieving gadget, helping you relax. With its unique assembly design and multiple value, this Newtons Cradle is not only a toy but also a stylish addition to any space, making it a great gift for birthdays and holidays. Specifications: Material: Metal+Plastic SizeS: Approx.16.5x14.5x18.5CM/6.50x5.71x7.28inch SizeM: Approx.13.5x11.5x13.5CM/5.31x4.53x5.31inch SizeL: Approx.9x7.5x9.5CM/3.54x2.95x3.74inch Color: 3 Colors Optional Package Includes: 1x Table Decoration note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.