Propellers, Pulleys and Gears
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Pulley Wheels Classpack
£14.50
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Motors
From £7.50
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Motor Clips
£2.99
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Gears
From £1.99
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Pulleys
From £1.38
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Steel Springs
£10.19
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Wooden Cams
£12.25
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Spring Balances
£19.99