Rubber band, size 16

Individual rubber band, 3" long and 1/8" thick

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Individual rubber band, 3.5" long and 1/4" thick

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This hands-on kit provides the materials to build and experiment with a balloon racer and a rubber band racer.

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Contains a large assortment of rubber bands of varying sizes to meet all your experimental needs.

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Fly into physics fun with five awesome models driven by a rubber band powered propeller! This Rubber Band Racers kit includes an 8-page manual & over 70 pieces to build a helicopter, airboat, airplane, fan car & hydrofoil.

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