YLME Bicycle Jockey Wheel, 11 17T Ceramic Bearing Rear Derailleur Pulley for 7 Speed Bikes,Black,14T

Premium Aluminum Alloy Construction: Crafted from high-quality aluminum alloy, this bicycle transmission pulley features anti-rust and anti-corrosion properties for long-lasting durability. The anodized finish ensures smooth operation and enhanced longevity. Enhanced Durability and Efficiency: Designed to reduce resistance and improve cycling efficiency, this guide wheel delivers exceptional durability and performance, making it a reliable component for your bike. High-Quality Bearings: Equipped with ceramic bearings, this rear derailleur pulley protects the center bolt derailleur and ensures smooth, efficient operation with its precision ball bearings. Wide Compatibility: This versatile transmission accessory is compatible with most rear derailleurs on the market and supports a range of speeds including 7, 8, 9, and 10-speed setups, offering broad compatibility. Customizable Options: Available in sizes ranging from 11-16T and supporting speeds from 7 to 12 SPD, you can select the number of teeth that best meets your needs for optimal performance.