- Package Includes: This set comes with 14 high-quality bicycle crank bearings, featuring a ball size of 3/16 inch (5mm) with 7 balls each. This ensures you have ample spare parts for various bike repairs and maintenance needs. - Product Dimensions: Each bearing has an outer diameter of 38 mm (1.5 inches), an inner diameter of 24 mm (0.9 inches), and a ball diameter of 8 mm (0.3 inches). Please verify the sizes to ensure compatibility with your bike's specifications before ordering. - Durable Material: Crafted from premium metal, these bottom bracket bearings are designed for longevity. Their rust-resistant properties and wear-resistant construction provide reliable performance, enhancing your biking experience with every ride. - Essential Function: Specifically engineered to replace the bearings on your bike's axle and wheel frame, these crank bearings ensure smooth operation. Regular inspection and replacement are recommended before leisurely rides or competitive events to maintain peak performance. - Practical Applications: - Ideal for routine bike maintenance, ensuring your bike runs smoothly and efficiently. - Perfect for competitive cyclists who need reliable performance and quick replacements during races or events. - Suitable for casual riders looking to enhance their bike's longevity and reliability for a better riding experience.