These Pendulum Balls are used in pendulum apparatus for displaying collision forces, motion and mass impact between each ball in demonstrations.
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| Order# | Description |
|  PNBP01 |  1" Diameter Plastic Ball |
|  PNBA01 |  1" Diameter Aluminum Ball |
|  PNBS01 |  1" Diameter Steel Ball |
|  PNBP75 |  3/4" Diameter Plastic Ball |
|  PNBA75 |  3/4" Diameter Aluminum Ball |
|  PNBS75 |  3/4" Diameter Steel Ball |
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