Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base)

[Scientific Design] Newton's cradle is scientifically designed to keep the pendulum ball perfectly arranged, making it possible to swing for 50s+.Perfect demonstration of the scientific laws of momentum conservation and energy conservation
"Excellent quality"-Our Newton cradle is made of 8mm chrome-plated metal steel bars, 20mm steel balls, high impact nylon and ultra-thin nanotechnology, which provides extremely durable oscillation support and can be used for a long time. Pursuing the spirit of artisans inspires us to continuously produce fine products.
"Widely used"-this Newton ball can be used as a gadget toy on the desk to relieve stress; As a teaching aid, teach science intuitively; As a toy for family activities, stimulate your child's creativity.
"Exquisite packaging"-we protect each ball with independent wrapping paper and fix it with foam shock-proof material, which is very suitable for Christmas gifts, Thanksgiving gifts, birthday gifts, Mother's Day gifts, Father's Day gifts, Valentine's Day gifts and so on.
[Warranty and Notice]-1-year warranty. If any parts are damaged, we will send you replacement balls, wires and plugs. The email will be answered within 24 hours. Note: clean the ball thoroughly before long-term swing use. The package includes an extra ball and a silky soft cleaning cloth.