Ceramic Bearing Aluminum Pulley Set for Jockey Speed Bicycle Accessory (2 Pieces) Wheel, 7/8/9/10 Compatible, 11T/13T,

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[Shop Information] - Please "Follow" our store and leave a 5-star review! ―・―・―・―・―・―・―・―・―・―・―・―・― These pulleys operate with smooth ball bearings. Material: 7005 aluminum alloy. Compatible with most rear derailleurs on the market and supports 7/8/9/10 speeds. Made from CNC aluminum alloy, it is lightweight and durable. Rust-proof and corrosion-resistant anodized aluminum. Material: 7005 Aluminum Alloy Component: Derailleur Construction: Ceramic Bearings Color: Red, Blue, Silver (Optional) Size: 11T, 13T (Optional) Application: For 7/8/9/10 Speed Diameter: 11T-40mm, 13T-50mm Fitment: For 4/5/6mm Roller Screw Axles