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7 kinds of plastic pulley group drive wheel, moving pulley, fixed pulley accessories, small pulley model accessories kit

price:USD$4.50
discount 70% in 2018-07-17 to 2018-07-19
price: USD$ 3.15
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
Minimum Order Quantity:3
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If you like DIY, please visit us,In the movie, the rotating blade parts can be purchased from our store.

The 7 kinds of plastic pulleys are made of 7 kinds of miniature pulleys, which are used in DIY Mini drive mechanism to produce interesting and creative works, such as more accessoriesInto the storeBrowse oh!

[name] 7 kinds of plastic pulley group

[Specification]

A [diameter] 29mm [thickness] 5.8mm (with center step) [aperture 3.9mm red]

B [diameter] 25mm [aperture] 2.4mm

C [diameter] 24mm [aperture] 1.9mm

D [diameter] 19mm [aperture] 1.9mm

E [diameter] 17mm [aperture] 1.9mm [color] Orange

F [diameter] 15mm (gear modulus 0.5 teeth 10 outer diameter 6mm) [aperture] 2.05mm

G [diameter] 5mm [aperture] 1.9mm

[knowledge point]

(1) the axle of 2mm is tightly equipped with 1.9mm hole pulley, and the 2.5mm axle is tightly equipped with 2.4 hole pulley;

(2) calculation formula of gear diameter: outer diameter of gear (addendum circle) = (tooth number +2) * modulus;

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