Check the listing for details. Replacement Balls - 1 Steel, 1 Plastic - Visual Scientifics by Eisco. Condition: New. Listed at 11.99 USD. Replacement Balls - 1 Steel, 1 Plastic - Visual Scientifics by Eisco Replacement balls for use with Visual Scientifics experiment systems, and useful for many other laboratory demonstrations. Set includes 2 balls - one steel ball measuring 0.5", and one plastic ball measuring 0.43". These replacement balls are particularly useful in Visual Scientifics PT2SCO collisions in 2D, PTLOP loop kit, and PTPROJ launcher. The balls can be used for free-fall experiments, as projectiles, or in free fall and ramp experiments. Suitable for high school and college students, or ages 14 to 21. Product Details BrandEiscoProduct TypePhysics Science KitsMpnPHVSSBALL Replacement balls for use with Visual Scientifics experiment systemsUseful for many laboratory demonstrationsOne steel ball and one plastic ballSteel ball measures 0.5", plastic ball measures 0.43" Check out my other items. -Powered by