SHIMANO DURA ACE R9100 Crank Arm 2x11s R9100 Crankarms Original Shimano HOLLOWTECH II Road Bicycle Parts

model:FC-R9100 series:DURA-ACE R9100 SERIES color:series colors thread five-way width (mm)_70:✔ compatible in the axis type_on the outside:✔ crank arm length (mm)_165/170/172.5/175mm:✔ toothed piece fixing arm/crank claw:4 HOLLOWTECH II (2ND GENERATION HOLLOW TECHNOLOGY):✔ HOLLOWTECH (HOLLOW TECHNOLOGY) CRANK ARM:✔ recommended center shaft_press-in:SM-BB92-41B recommended center shaft_thread (normal):BB-R9100 technology:HOLLOWTECH BB | HOLLOWTECH II thread five-way width (mm)_68:✔ Q factor (mm):146 P.C.D. （mm）:110

package include: -1pcs-dura-ace r9100 crankarm 165/170/172.5/175mm(need choose)