SPANCARE PHARMACEUTICALS Newtons Cradle Balance Balls 7 1/4" - Black Wooden Base

Newtons Cradle Balance Balls Newton's Principle that "action and reaction are equal and opposite Relieve stress Action and reaction are equal and opposite Fair warning: it's totally addictive! 7.25".0 ABOUT THIS ITEM👇 ✔ Newtons Cradle Balance Balls 7 1/4"✔ Black Wooden Base✔ Newton's Principle that "action and reaction are equal and opposite.✔The classic desk accessory is art-in-motion✔Use it to waste time relieve stress tune out boring coworkers or schooling youngsters in physics. Fair warning: it's totally addictive! 7.25".0✔Lift one of the 5 steel balls at either end and let it swing back--the ball at the other end will swing out the same distance as the one you lifted proving the scientific theory and mesmerizing you for hours.