Rim: 700C aluminum alloy double rim 40MM, 20/24 holes, nozzle, sandblasted anode black body /CNC black brake rim. Base: 8-12 speed 7075 aluminum alloy HG five-claw base (three teeth per claw) (8-11 speed installation need to add a gasket,12 speed flywheel direct installation), 7 speed card fly need to add 3 gaskets.
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