CIC-Twin-Motor-Gearbox-Kit-CIC-21-131-P-This-twin-motor-gear-box-uses-a-two-motor-system-to-provide-power-&-speed-to-turn-the-round-shaft-in-two-different-directions-P-P-The-gear-box-is-made-from-high-quality-plastic-Use-this-gear-box-&-motor-set-to-construct-mechanical-toys-&-robotic-products-Two-battery-powered-motors-are-included-The-easily-adjusted-gearboxes-can-be-used-with-a-gear-ratio-of-1-60-1-120-or-1-288-P-CIC-21-131-Twin-Motor-Gearbox-Kit