Ritchey Logic WCS Protocol Front HUB Bicycle Ceramic Ball Bearing set Outer Diameter - 52mm Equal: FR-5-2RS1 &FR-5-2RZ

Equal: FR-5-2RS1 &FR-5-2RZ

each 625ZZ bearing is closed with 2 Metal Shields

S6900-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination

6702 Ball Bearing with Ceramic Balls

Ritchey Logic WCS Protocol Front HUB Bicycle Ceramic Ball Bearing set Outer Diameter - 52mm Equal: FR-5-2RS1 &FR-5-2RZHybrid Ceramic Deep Groove ball Bearings (steel rings with ceramic balls) Fits Ritchey Logic WCS Protocol Front 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 two Bearings Location : Front Hub