Through Authenticate 
PROFILE: 30mm ALLOY RIM
HUB: F/20H , R/ 24H Bearing
SPOKE: BK FLAT STAINLESS
COLOR: Matt BK
WEIGHT: 1615g
Description:
1.Wheelset with* close Drive System* hub .
2.Control the sound of Drive side and reduce the friction.
3.This design have good rotate function than origional wheelset
