Because hub available in both 28h and 32h drilling.
Overview
For use with rim brakes
Suggested radial lacing on both sides
Sealed bearings
10mm axle made of aluminium
M6 funbolts
Drilling: 28h / 32h
Weight: 104g (inc. funbolts)
Hub is sold with:
Funbolts
Measurements:
Flange spacing: 55mm
Flange diameter: 29mm
Centre of hub to flange: 28mm
Additional information:
Hub has a 10mm axle which makes it incompatible with Trialtech forks equipped with 9mm dropouts. Additional machining needed to make the set compatible.