二合一齒輪箱 模塊 KNS7
品牌：【VELLEMAN】
簡(jiǎn)要描述：contains: motor, 2 set gears, metal shafts, gearbox and other accessories powered by: 2 x AA batteries (not included)
GEARBOX 2 IN 1
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KNS7
GEARBOX 2 IN 1
二合一齒輪箱
FEATURES
- use the contents of this set to change the speed of your existing sets
SPECIFICATIONS
- contains: motor, 2 set gears, metal shafts, gearbox and other accessories
- powered by: 2 x AA batteries (not included)
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