newton cradle balance pendulum balls for home office decoration newton's pendulum newton balls physics pendulum science desk 1007

color: silver product name: newton pendulum decoration teaching ornaments project function: home decoration / classroom teaching material: plastic dimensions: height: 30 cm, width: 10 cm packing: carton + bubble bag + foam filling (very safe packaging) style: modern theme: nordic style feedback 1.if you're satisfied with our products and service, we will appreciate it (item as described 5 stars, communication 5 stars, shipping time 5-stars). 2. if the products you received was damaged