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4 Speed Crank Axle Gear Box

UMTRR-701100

This 4-Speed Crank Axle Gear Box is small but has a lot of power. There are four gear ratios to choose from, including the slowest ratio that allows for two rotations per minute. Two crank arms are included for added flexibility in the design of projects. The gear ratios are 126:1, 441:1, 1543.5:1 and 5402:1.

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