Detailed product specifications
1.Material and color
Material: High-strength aluminum alloy (lightweight, wear-resistant, corrosion-resistant)
Color: Silver

2.Dimensional parameters
ID (bore): 8mm (0.31 inch)
Length: 10.26mm (0.4 inch)
End OD: 11mm (0.43 inch)
Middle OD: 17mm (0.7 inch)

3.Package contents
Quantity: 16 spacers/pack (for 8mm shaft)

4.Adaptation range
Applicable axle diameter: 8mm standard axle

Applicable equipment:
roller skates (single/double row), skateboards, electric skateboards, scooters, luggage wheels, model cars, mechanical tools.

5.Core functional features
Precision alignment: Ensure the bearing is accurately centered on the axle, reduce offset grinding.
Anti-bearing collapse: Enhances support and extends bearing life.
Noise reduction and vibration damping: makes the wheel rotation smoother and reduces rattling.

6.Suggestions for use
Replacement cycle: It is recommended to replace the spacers if you find the wheels wobbling or increasing noise after long term use.
Installation tips: installed between two bearings, can be manually operated without tools.