- Durable Material : Constructed from high-strength steel, these 4 bike ball bearing holders offer exceptional durability and longevity, ensuring reliable performance on your bike over time. - Easy Installation : Designed for hassle-free installation, these ball bearing cages allow you to quickly replace damaged bike ball bearings without the need for special tools, making bike maintenance straightforward. - Versatile Application : This stainless steel ball holder is engineered for precise fit and functionality, specifically tailored for replacing crank bearings on a variety of bike models, making them essential for maintaining your bike's performance. - Dimensions & Compatibility : Please ensure the following sizes meet your needs: - Outer Cage Diameters: 25mm, 20mm, 40mm, 30mm - Inner Cage Diameters: 14mm, 12mm, 34mm, 16mm Confirm compatibility with your bike before ordering to ensure optimal performance. - Practical Use Scenarios : 1. Replace worn out crank bearings efficiently to enhance your bike's smoothness and responsiveness during rides. 2. Suitable for bike enthusiasts undertaking DIY repairs who prefer high-quality replacement parts that fit seamlessly. 3. Ideal for cyclists looking to improve their bike’s overall reliability and performance by utilizing robust and durable components. These bike ball bearing holders are vital for maintaining your bike's efficiency, providing a reliable solution for common bearing issues with ease and precision.