Pack of 10 ball bearings. Each ball measures 19mm in diameter. Made of high quality steel. Built to last.
Great for a wide variety of physics experiments and for demonstrating mechanics, including kinetic and potential energy, velocity, energy conservation, momentum, collisions, inertia, friction and density/mass.
Perfect for use with projectile launchers, roller coaster simulations, collision simulations, ballistic pendulums, second law of motion apparatuses and inertia demonstration apparatuses. Designed for use in a science laboratory, but also great for various uses around the home.