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Knex Forces Energy and Motion



A fantastic kit of Knex - A fantastic kit of Knex designed to build over 8 different racers, powered
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Knex Forces Energy and Motion
A fantastic kit of Knex - A fantastic kit of Knex designed to build over 8 different racers, powered with rubber bands, spring, flywheel and battery motors. The Instructions are brilliantly simple and colour coded so success is guaranteed. Supplied in a strong storage tray. 442 pieces. Requires 2 AA batteries, not supplied. Ages 6 to 12.

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