Speed ratio 10 speed ratio 15 speed ratio 20 speed ratio 25 30 speed ratio 40 speed ratio 50 speed ratio 60 speed ratio 75 100 speed ratio 150 speed ratio 180
The hardness of the tooth surface:
The face of the hard teeth.
Layout form:
The coaxial type of the
Level of progression:
Level 1
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Items weight estimation 0 g, subject to actual weight
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