A benchmark in reliability, Dura-Ace hubs have revised seals for smooth running and even greater durability.
Model Number FH-9000
Series DURA-ACE
Axle Type QR(163/168mm)
Over Locknut 130mm
Axle Length 141mm
Spoke Holes 24,28,32,36H
Spoke Hole Circle (Non Drive side) 44/( Drive side) 45mm
Contact Sealing Labyrinth and Contact
Center to Flange (Left) 56.9mm (Flange Distance:56.5, Dish:9.95(only for 28H))