Type: Hybrid Ceramic Deep Groove ball Bearings (steel rings with ceramic balls) Fits Zipp 808 Rear HUB Bicycle Closures: Rubber Sealed Closure Side: Double Sided Seals Lubrication: Low Friction Grease Material: Corrosion Resistant Chrome Steel Balls: Low Friction Solid Ultra Light Ceramic Balls Brand: VXB Quantity: Set of 4 Bearings Pack#179909 Location : Rear Hub Pack#179909.
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