• Bottom Bracket with small ball bearings for reduced weight • Advanced seal construction for consistently smoother rotation • Exterior positioned bearings offer better weight distribution & more stability • Integrated driveside crankarm & bottom bracket spindle • Compatible with HollowTech II cranks • External Bottom Bracket tool supplied • Easy Installation • Italian Threaded BB type • Spindle Interface Type: Hollowtech II • Cups Material: Aluminium • Shell Material: CFRP • BB Shell Height: 36 x 24mm • BB Shell Width: 70mm • Suits: Road • Weight: 72g • Made in Japan