A speed ratio 3 A speed ratio 4 A speed ratio 5 A speed ratio 8 A speed ratio 10 Two speed ratio 9 Two speed ratio 12 Two speed ratio 15 Two speed ratio 20 Second stage speed ratio 25 Second stage speed ratio 30 Second stage speed ratio 32 Second stage speed ratio 40 Second stage speed ratio 50 Three speed ratio 60-512 Three stage speed ratio How much time is required Please note
Tooth surface hardness:
Hard tooth surface
Layout form:
Coaxial
series:
Other
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Items weight estimation 0 g, subject to actual weight
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