This ball bearing holder with 9 balls, suitable for heads with 19mm inner diameter. It is an ideal replacement for your bike. 6.35mm bearings for bicycle rear wheel/axle 9 ball bearing cages Bearing pattern: 6.35mm x 9 For component: hub/wheel Description: Pair of bicycle rear wheel axle 6.35 mm x 9 ball bearings Features: Set of 2 bike rear wheel axles 1/4" x 9 ball bearings This ball bearing holder with 9 balls, suitable for heads with 19mm inner diameter. It is an ideal replacement for your bike. 9 ball bearing cages. 6.35 mm bearings for bicycle rear wheel/axle. Features: Bearing pattern: 6.35mm x 9. Bearing size: 6.35 mm. Material: steel. Color: silver. Dimensions: 6.35 x 22.9 cm. Outer diameter of the cage: approximately 28 mm. Inner diameter of the cage: approximately 19 mm. For component: hub/wheel. Type: ball bearing. Component subtype: Bearing Type of bike: MTB. Content: 2 rear wheel axles 6.35 mm x 9 balls. Note: Due to lighting effects or differences in brightness or contrast on your monitor, there may be slight variations in color between the photo on the site and the article itself.< /p> Since measurements are taken by hand, the sizes shown may vary by 1-2 mm.