DIY 81 Pieces Plastic Gear Set

DIY 81 Pieces Plastic Gear Set 

contains many different types of gears, all of which can coincide with each other. The modulus is 0.5. The inner holes are 1.9mm, 2.05(2.0)mm, 2.4(2.55)mm, 2.9(3)mm, etc.

[Modulus] 0.5M, can be freely matched

[Aperture] 0.8,1,1.9,2.05,2.55,3, etc. , etc.

[Material] POM plastic