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- 4.18mm Spacers are used between spider and inner chainring.
- Outer = 12.1mm, Inner = 8.05mm, Thickness = 4.18mm
- Designed for improved chain line and retention
- Fully CNC machined with 7075-T6 aircraft aluminum alloy for lightweight strength
- Certified to ISO 9001:2008 standard
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(Set of 5) USAmade 4.18mm 7075-T6 aluminum chainring spacers.- NEW- Performance Driven- Made in the U.S.A.