Eisco Wooden Friction Block with Hook Wood/Felt:Education Supplies, Quantity

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Wooden Friction Block, Wood and Sandpaper - Measures 6 x 3 x 1.25

Wooden Friction Block, Pine Wood and Felt - Measures 6 x 3 x 1.25

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Friction Block

Wooden Friction Block, Pine Wood and Felt - Measures 6 x 3 x 1.25

Friction Block with Hook, Wood