The BKCJ-0190 11t Zero Ceramic Hybrid jockey wheel set is designed for smooth and efficient performance in bike drivetrains.This set features 11-tooth jockey wheels that incorporate ceramic hybrid bearings, which combine ceramic balls with steel races for reduced friction and increased durability.These jockey wheels are ideal for riders looking to enhance their bike´s shifting performance while minimizing wear.The ceramic hybrid technology ensures long-lasting, high-performance operation, making it a great choice for both casual and competitive cyclists seeking better efficiency and reliability in their gear system.