Features:                  
1. Package Include: You Will Get 5pcs Bike Crank Bearings, 1/4" Ball Size X9 Balls, Sufficient Quantity Can Meet Your Diverse Needs Of Bicycle Parts Replacement.   
2. Size: Outer Diameter Is 29mm/ 1.14inch, Inner Diameter Is 18mm/ 0.7inch, Ball Diameter 0.25inch/6.3mm. Please Be Sure To Verify The Size Before You Order The Ball Bearing.   
3. High Quality: These Bottom Bracket Bearings Are Made Of Excellent Stainless Steel, High Hardness And Rustproof, Wear-Resistant And Long Service Life, Provide Optimal Performance For You Every Time You Hit The Road.   
4. Practical Function: The Bike Crank Bearing Can Be Used For Bicycle Axle Wheel Frame Bearing Replacement, And Fit Seamlessly Into Your Bike' S Drivetrain Components. You Can Regularly Check And Replace Your Bicycle Bearing Before Cycling Or Bicycle Race.   
5. Wide Application: The Ball Crank Bearing Is Suitable For Various Bicycle Cranks, Such As For Kid Schwinn S5230 Bikes, For Kent Genesis Bike, 26" For Next Brand Mountain Bikes, For Free Spirit Sears Bike, For Schwinn Gtx Bike, Most Mountain Bikes, Road Bike, Low Speed Bikes, Bca Bike, Stretch Bicycle And So On, Perfect For Cycling Enthusiast, Professional Cyclist And Avid Cyclist.        
                  
Specifications:                    
Product Name: Bicycle Ball Bearing  
Ball Number: 9  
Outer Diameter: 29mm/ 1.14"  
Inner Diameter: 18mm/ 0.7"  
Ball Diameter: 6.3mm/ 1/4"  
Material: Stainless Steel  
Color: Silver Tone  
  
Packaging Includes:                  
5* Bicycle Rear Ball Bearing