F-S31F
poke hole: 32/36H
Axle Dim: 3/8*100mm
Axle Material: AL7075
Flange PCD: 38mm
Sealed Bearing: 2pcs
Veight: 124g
For Bmx
F-S31R
poke hole: 32/36H
Axle Dim: 3/8(M14)*110mm
Axle Material: Crmo
Flange PCD: 47mm
Sealed Bearing: 5pcs
Veight: 298g
For Bmx
Hubs F-S31F/F-S31R