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47183883
Features: Anodized CNC machined construction. Anti rust/corrosion resistant anodized. Ceramic bearings. Fits for 4/5/6mm roller screw axis and most of rear derailleur on the market,support 7/8/9/10 speed. Specification: Color: Black / Silver / Blue / Red / Golden (Optional) Size: 11T / 13T (Optional) Diameter: 41mm / 49 mm Material: 7075 aluminum alloy + Ceramic bearings Package weight: 30 g / 1.1 oz Package List: 2* Wheel 2* 4mm Installation Adapter 2* 5mm Installation Adapter
Anodized CNC machined construction.
Anti rust/corrosion resistant anodized.
Ceramic bearings.
Fits for 4/5/6mm roller screw axis and most of rear derailleur on the market,support 7/8/9/10 speed.