Bicycle Jockey Wheels 12T/14T MTB Ceramic Bearing Derailleur Pulleys High Performance Rear for And Road Bikes,Red,12T

[Superior Ceramic Bearings]: The inner ceramic bearing is ultralight with high lubrication, ensuring smooth operation and a more stable ride. [Premium Material]: Crafted from high-quality aluminum alloy, this gear guide pulley is rust and corrosion-resistant, offering durability for long-term use. [Anti-Rust Design]: Designed with anti-rust and corrosion-resistant materials, this anodized machined bicycle jockey wheel ensures reliable performance over time. [Versatile Fitment]: Suitable for 4/5/6mm spindle shaft rollers with two options (12T or 14T) available. Please verify compatibility with your bike before purchase. [Customer Satisfaction Guarantee]: If you are not satisfied with our product, please contact us anytime. We will respond promptly and assist in resolving any issues.