My Science Perks is FREE! Just place your order while logged in to your Home Science Tools account and you'll automatically earn up to 6% back when your order ships!Learn More
Individual ping pong ball. 40mm in diameter.More Details
We guarantee that you will be happy with every purchase you make at Home Science Tools! Every product you purchase is covered by our exceptional 90-day money-back guarantee. We have been delighting our customers with quality science products since 1994!
See our return policy for further details.