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Model accessories 3.75 yuan pulley selection, 7 kinds of model plastic gear package DIY transmission

discount 70% in 2018-07-22 to 2018-07-24
price: USD$ 2.62
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
Minimum Order Quantity:4
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The pulley types are: you can click to see the detailed size and big picture 

Model notes:

Coding final English: A: tight matching B: loose

The central axis of the 2A is 1.95mm; it is tightly coupled with the optical axis of 2mm and rotates along with the optical axis.

The central axis of 2B is 2.05mm; the optical axis of 2mm is loosely coupled and rotates freely on the optical axis.

62A:6: 6MM in diameter and 1.95MM in center

132A :     13: diameter 13MM, central axis is 1.95MM

102B:     12mm belt wheel +102B gear combination

Inner hole 2.05mm, loose fitting (big wheel outer diameter 14.6mm/ small wheel outer diameter 5.75mm)

122B: pulley diameter 16MM gear, 12 teeth, 0.5 modulus inner hole 2.05MM loose