AEcreative 20pcs 1.0mm 1mm Aluminum Alloy Bicycle Bike Chainring Bolt Spacer Double Ring to Single - Product Features
- Use for adjust chainring bolts span spce, example: convert double chainring to single.
- CNC 6061 aluminum alloy machined
- thickness: 1.0 mm, outer diameter: 12 mm, inner diameter: 9.8 mm.
- Package include: 20x chainring spacer