- Package Contents: This set includes 10 bicycle crank bearings, each featuring 9 balls with a diameter of 1/4 inch (6 mm). Perfect for meeting various spare parts needs for your bike. - 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). Ensure compatibility by checking these measurements before ordering. - High-Quality Material: Constructed from premium metal, these bottom bracket bearings are designed to resist rust and wear, ensuring long-lasting durability and reliable performance. - Essential Functionality: These crank bearings are specifically engineered to replace those in your bike's axle and wheel frame. Regular inspection and replacement of bearings are recommended for optimal performance during leisurely rides or competitive races. - Practical Applications: Ideal for cyclists who frequently ride in variable conditions, these bearings provide smooth operation and enhance the overall efficiency of your bike. They are suitable for both casual biking enthusiasts and competitive riders who demand peak performance. - Compatibility: Designed to fit a range of bike models, these bearings can easily replace worn or damaged components, helping to maintain your bike's functionality without significant downtime.