Track/Fixie wheel set built with premium TK hubs with Japanese sealed bearings and lightweight drilled axles Aero Rage wheels feature 24mm deep (19.5 external width) aero rim with CNC'd brake track AeroTrack wheels feature a 27mm deep (19.5mm external width) aero rim with a brake track that has color applied for a consistent appearance. Braking may be impaired by the color coating and the color will wear away if brake pads are applied Strong boxsection double wall, T-10 heat treated alloy, sleeve joint Build with straight gauge spokes and brass spoke nipples 120mm OL rear (130mm OL rear axle conversion sold separately HL3499)