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Versatile and easy to construct gear box broadens the world of handicrafts. Allows 2 gear ratios, 11.6:1 and 18:1 to be selected. Polyacetal resin gears permit efficient power transmission with less mechanical noise than metal gears. Accepts 140 or 260 type motors. Included motor operates on 3-4.5 volts. Pictorial instruction sheet included.
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