Halo aerotrack rear wheel using the outstanding halo 120mm width track hubs and precision built together using 32 reliable plain 14gauge spokes combined with the halo aerotrack mid size aero road rim light and strong with an attractive mid size 27mm aero section features aerotrack 27mm deep non brake surface rim sb hub 32h fixedfreewheel or double fixed weight 1010g buy halo wheels from chain reaction cycles the worlds largest online bike store