Pendulum Ball for Newton Cradle Balance Physics Science Swinging Educational Toy Decoration

Feature: 1. Perfectly demostrates for Newton"s third law of motion and the principle of conservation of momentum. 2. Also, the cradle for Newton is an excellent educational gift for kids, making the studying much more interesting. 3. A meaningful and entertaining decoration, suitable for home, office, classroom, library, studio, etc. 4. Consisting high quality plastic and steel balls, the pendulum ball toy is very durbals for long?term use. 5. Moreover, the assembly of the cradle for Newton is very simple, and you can complete it within minutes. Specification: Item Type: Pendulum Ball Product Material: Plastic + Iron Product Size: Approx. 17.5 x 14.6 x 17.8cm / 6.9 x 5.7 x 7in (There might be small errors in manual measurement) Application: Desktop decorations, gifts, etc.. Package List: 1 x Base1 x Pendulum Ball Rack