- Crafted from high-quality steel, these pulley bushings ensure smooth performance and exceptional durability, enhancing your cycling experience. - The robust steel pulley cage adds an extra layer of durability, making it a reliable choice for demanding rides. - Please note: This product is not compatible with the Shimano Tiagra 4700 road system, ensuring you select the right components for your bike. - Designed for use with 8 and 9-speed drivetrains, this product meets the needs of a wide range of cyclists. Ideal applications include: - Upgrading your existing bike for improved shifting performance and longevity, especially valuable for avid cyclists who demand reliability on longer rides. - Replacing worn-out components in your current setup, ensuring consistent and efficient gear changes for your daily commuting needs. - Perfect for bike enthusiasts looking to enhance performance during competitive rides or races, where every second counts. With its focus on functionality, compatibility, and high-quality materials, this product stands out in its category, delivering dependable performance for all your cycling adventures.