Velocity Dyad is a wider rim (24mm wide) making it a great choice for loaded touring, commuting, a tandem, cruiser or even a 29'er. Item Specifications: Color, Black, Weight, 525, Hub Drilling, 32, Rim Depth, 22, Manufacturer Spec ERD, 597, Valve, Presta, ISO Diameter, 622 / road / 29", Wheel Size, 700c, Tire Type, Clincher, Rim Center Offset, 0, Rim Joint, Sleeved, Brake Track, Non-Machined, Defined Color, Black, Rim Width (External), 24, Rim Material, Alloy, Rim Width (Internal), 18.6, QBP Measured ERD (mm), 597,.