Product NameThrue Rear Hub
Product NumberBM550-148
Installation Size148*12mm
Holes32H
Brake Interface 6-Bolt Type
Shell MaterialAL6061
Axle MaterialAL7075
Freehub MaterialAL7075
Freehub Syetem4Pawl
Freehub BodySHIMANO Micro spline 12S
Product Weight370g