Mavic Cosmic Carbone SLR Rear HUB Bicycle Ceramic Ball Bearing set Inch (imperial) Bearing the 6304NR inner diameter is

the 6304NR inner diameter is 20mm

the outer diameter is 150mm and the width is 24mm

7012CYDUP4BNLS inner diameter is 60mm

precision-ground surface

Shaft Diameter: 1 5/8" inch

Mavic Cosmic Carbone SLR Rear HUB Bicycle Ceramic Ball Bearing set Inch (imperial) Bearing the 6304NR inner diameter isHybrid Ceramic Deep Groove ball Bearings (steel rings with ceramic balls) Fits Mavic Cosmic Carbone SLR 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 3 Bearings Location : Rear Hub