Enhance your bicycle’s performance with these high-quality CNC aluminum alloy jockey wheels, designed for durability, lightweight efficiency, and smooth operation. Crafted from premium 7005 aluminum alloy with an anodized finish, these pulleys offer excellent resistance to rust and corrosion, ensuring long-lasting use in various riding conditions. Equipped with fully rubber-sealed ceramic bearings, they provide smooth, quiet rotation, reducing friction and improving the overall shifting experience for your rear derailleur. Key Features: · Premium CNC Aluminum Alloy Construction: Made from 7005 aluminum alloy, these jockey wheels are both lightweight and durable, contributing to improved bike handling and reduced weight. · Anti-Rust and Corrosion Resistant: Anodized surface treatment protects against wear, rust, and corrosion, extending the lifespan of your bicycle components. · Smooth Ceramic Bearings: Featuring fully rubber-sealed ceramic bearings that run smoothly and quietly, enhancing shifting precision and reducing maintenance needs. · Wide Compatibility: Designed to fit most rear derailleurs on the market, supporting 7, 8, 9, and 10-speed drivetrains for versatile use across various bike models. · Multiple Size and Color Options: Available in 11T (40mm diameter) and 13T (50mm diameter) sizes, with color choices including Red, Blue, and Silver to match your bike’s style. · Easy Installation: Compatible with 4mm, 5mm, and 6mm roller screw axes, making installation straightforward and convenient. · Package Includes: Two ceramic bearing jockey wheels, providing a complete replacement set for your bicycle’s rear derailleur. Specifications: · Material: 7005 Aluminum Alloy · Components: Derailleurs Jockey Wheels · Bearings: Fully Rubber-Sealed Ceramic Bearings · Sizes: 11T (40mm diameter), 13T (50mm diameter) · Compatible Speeds: 7/8/9/10-speed drivetrains · Colors: Red, Blue, Silver (optional) · Quantity: 2 pieces · Weight: Approx. 20g (11T), 23g (13T) · Fit For: 4/5/6mm roller screw axis Upgrade your bike’s drivetrain with these anodized CNC machined jockey wheels to achieve smoother gear shifting, reduced noise, and enhanced durability. Ideal for cyclists seeking reliable, high-performance accessories that improve riding efficiency and extend component life.