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 |