This sleek aerodynamic Dura-Ace Hollowtech II crankset features significant weight saving and increased rigidity through the use of a 20% stiffer chainring, resulting in optimal shifting & power transfer. Thin-walled forged aluminum crank | Lightweight & Strong Hollow chainring | Lightweight & rigid New tooth design | Improved chain contact for power efficiency Revised seal design for BB adapter | Smoother rotation and longer durability

# Chainrings	Double Chainring
# Speeds	10-Speed
# Teeth	39/53T
Attachments	Dual Pinch-Bolt Attachment
Bicycle Type	Road
Chainring Material	Aluminum
Color	Gray
Crankarm Length	175mm Crankarms
Material	Aluminum
Spider BCD	5 Arm Spider
Weight	725gm
With/Without BB	Without Bottom Bracket

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