This versatile and easy-to-construct motorized gear box is designed for high torque output and speed. -- The one-touch slide switch allows for three selectable gear ratios; no need to take apart the gear box to change gear ratios. The OWI gear box has 6 gear ratio possibilities: 6.8:1, 45.97:1, 310.74:1 or 17.68:1, 119.52:1, 807.93:1. The adjustable mounting brackets allow for flexibility when creating your own educational science project at school or home. Operates at 3V DC. RPM 7000.

$17.95

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gear box selectable

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