Specification:
Type: Bike Ball Bearing Retainer
Out diameter: 29mm
Inner diameter: 22mm
Ball diameter: 6.35mm (1/4")
Material: Steel
Package includes: 4 x Bike Ball Bearing Retainers

Made of steel, high quality, durable and high strength.
This is a bead holder for bicycle parts replacement. Each 29 mm cage has nine 6.39 mm balls, which are precision bearings.
With this ball bearing cage, you can replace bicycle parts at home.
Keep the bicycle away from abnormal noise and drive more smoothly.
Ideal supply for bike enthusiasts and important bicycle parts.
Note:
1. Please apply a small amount of grease before installation.
2. In order to protect the retainer, a little grease is usually applied to the retainer.
3. Due to manual measurement, please allow an error of 0-1 mm.