Tamiya Fun Craft Series No. 110 4-Speed Crank Gearbox Set This is the price for one brand new, unopened box. For two boxes, the price is 1500 yen. ✴︎ A gearbox that delivers great power in a compact size This is an assembly-type gearbox that allows you to select from 4 different gear ratios by rearranging the gears. The use of a worm gear on the motor pinion allows for low-speed, high-power output, which is its appeal. The largest gear ratio allows for a slow movement of about 2 rotations per minute. Two crank arms are also included, which can convert rotational motion into linear motion. The gears and gearbox are made of smooth-moving, specially reinforced plastic, and can be easily and securely assembled with just snap-fits and screws. 【Specs】 Overall length when completed: 74mm, mounting width: 30mm, overall height: 33mm. Output shaft length: 100mm. Gear ratios: 126:1, 441:1, 1543:1, 5402:1. Includes motor. #COCO Educational Toys Other items are also on sale.