Newton's Cradle Bumper Ball Ball Of Physics Decompression Decoration 7 Beads Full Metal Frame Newton's Ball Features: Scientific DesignScientifically designed to make the swing ball perfectly lined up and swing for more than 30 seconds. Scientific perfect demonstration of the of conservation of and of conservation of energy Excellent QualityOur stand is made of 8mm chromed metal , 20mm bearing steel, high-strength nylon, ultra-thin nanotechnology, which can provide extremely durable vibration support and is durable for a long time. The pursuit of spirit inspires us to continuously produce high-quality goods Wide ApplicationThis ball can be used as a desk gadget and office decoration to relieve stress; as a teaching aid to teach science intuitively; as a family activity toy to stimulate children's Exquisite Packaging and GiftWe use individual wrapping paper to protect each ball and fix it in foam shockproof material, the swing ball is perfect for Christmas gift, Thanksgiving gift, birthday gift, Mother's Day gift, Father's Day gift, Valentine's Day gift etc. GRAVITY AT WORKSee for yourself when the ball transfers the fall and transfers weight on the gadget. Drop a ball or two. You can see the energy transfer in such an amazing way : product contains 1X Ornament