DRILLED BALL SET, SET OF 12, 1,
Item Description:
DRILLED BALL SET, SET OF 12
Product Family Description:
An economical set of 12 drilled balls for all your pendulum experiments. Set contains two each 25mm diameter balls of brass, aluminum, steel, wood, cork, and copper, in a plastic box for easy storage. All drilled balls feature 3mm countersunk holes so pendulum cord knots can be recessed.
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