Tamiya田宮 工作樂益智勞作 四速齒輪箱
4-Speed Worm Gearbox HE  Item #72008 
The Type 260 motor has been used in a variety of applications since its release in 1985. The gearboxes are often used in Robotics contests and enable the possibility of assembly with high and low gear ratios. 
 
Specs & Features
 
此商品為套件 須自行組裝
    - The gearbox features four gear ratios (84:1, 216:1, 555.4:1, 1428.2:1). 
 
    - Gear ratio can be easily adjusted by altering the middle and final gear attachment positions. 
 
    - 4mm dia. threaded driveshaft included. 
 
    - Included gearbox attachment parts can be easily installed at a choice of two attachment positions.This gearbox is compatible with other Education Construction items. 
 
    - Type 260 motor included. RPM: 5040 Max Efficiency, Voltage: 1.5V Recommended. 
 
    - Separately available 130 and 140 motors can also be attached with the included adapter. 
 
    - Width: 31.5mm, Height: 47mm, Length: 49mm. 
 
    - H.E. denotes High Efficiency.