4PCS full carbon 28.6/31.8mm bicycle carbon spacer hollow Ultra light headset parts cycling Washer Bicycle Headset Stem Spacers
Technical Details
| Bore Diamete: | 28.6 |
| Height: | 5/10/15/20mm |
| Material: | carbon |
| Outside Diameter: | 28.6 |
| Size: | 5/10/15/20mm |
| Weight: | 4g(10mm) |
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