Shimano Dura Ace FC R9200 Crankset 160mm 12 Speed 50 34t Hollowtech II Spindle Interface BLK Model=Bullet Tool 8 Drop Bend Style Anatomic 8 Drop Bend Style Anatomic Cable Routing External Material Aluminum Width Measurement Center Width 42 Defined Color Black Clip on Compatible Yes You need a tire that keeps your legs on their game for hours on end provides tenacious grip in the corners allows you to drop your buddies off the start while remaining composed when leaned over through the first turn Color Black Rings 50 34 Number of Chainrings Double Crank Length (mm) 160 Crank Intended Use Road Drivetrain Speeds 12 BB Included No Pedal Spindle 9 16" Spindle Interface Type Shimano Hollowtech II Chainring BCD 110 Shimano Asymmetric Chainline Hub Compatibility 130 Hubs Defined Color Black With HOLLOWTECH II crank arms to ensure light weight and Shimanos class leading chainring designs the FC R9200 wont let you down