55 single-layer gears with different types of single-layer gears, all standard, and common. The gears are all 0.5-modulus plastic gears and are single-layer circular gears, generally used on axles, with a variety of different apertures.

Specifications:

[product material]: POM plastic (very wearable)

[Scope of use]: Transmission hook for various DIY hand-made products

[Gear Modulus]: The modulus are, all can be used together.

Package Includes:

rubber band 6 (big small and all three color at random).

 T collar four. 1 82 a copper gear. 

Blue spindle 7,

7 only pulleys,

axle sleeve 3 only, 

gear installation tools 1 set of 2,

only 1 battery,

only 4 propellers,

ordinary spindle 6 kinds of color,

four-wheel drive tooth three fold,

color car accessories gear 14 ( 0.4 module, aperture 1.8.1.4.2, etc.).