Features:Aluminum headset spacer is lightweight and easy to install, resistant to corrosion, more sturdy and durable than carbon fiber headset spacers, fit most of the bicycles.Bicycle headset spacers threadless are made of black anodized aluminum alloy material with smooth surface and exquisite workmanship, sturdy and durable to use.Suitable for most bicycles, mountain bike, road bike, etc.Specifications:100% New BrandColor:BlackMaterial: Aluminium AlloyInner Diameter:28.6mm (1-1/8 inch)Outer Diameter:33mm/1.30"Thickness:20mm/0.79"Package included：5 x Bicycle Headset Spacers.
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