When these two one-pound steel balls collide, the impact generates enough heat to burn a hole in a piece of paper. Your students will not forget this spectacular transformation of mechanical energy into heat energy. The balls are 2" in diameter.
WARNING: This product can expose you to chemicals including nickel and lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.