Newton Cradle Metal Balance Balls Permanent Motion Office Desk Decoration

NEWTON'S CRADLE: Watch as one ball on one end strikes the other sending the one on the opposite end into the air while the ones in the middle stay perfectly still.
GREAT DESK DECORATION: This Newton's Cradle is a perfect decoration for desks and tables, whether at the office or at home.
TEACHING TOOL: Demonstrate conservation of momentum and energy with these swinging spheres!
QUALITY MATERIALS: The cradle is made of durable stainless steel, the metal balls feature a reflective mirror finish and the base is made of plastic.