Description:34 Kinds Motor Gear Rack Pulley Belt Worm Single Double Plastic Gears Kit Set
34 different kinds of parts and accessories in just one package， which makes it a perfect choice forlaboratories， science education， DIY models， RC-airplane\/helicopter repair， etc.
Our product includes gear， rack， pulleys， belts， and other transmission parts， and all the display pictures were taken in kind. Specifications:
Color:As the pictures showMaterial: PlasticQuantity: 41pcs
Package include: 1 x Gear Kits with 34 kinds (41pcs) - gear， rack， pulley， belt，Worm gear， Single!#!amp!*!amp;double-gear， 8-56 teeth