Shimano Ultegra® HB-6600 Front Hub
● Over Locknut - 100mm
● Axle Length 108mm(M9)
● Spoke Holes 36/32/28/24,
● 18(aero type)
● Spoke hole
● Circle 38mm
● Sealing labyrinth and contact seals
● Hub Shell cold forged aluminum/anodized
● Center to Flange - Right & Left: 35.8mm
● Average Weight (QR Weight) - 140g (60g)
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