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, Silver, 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, Machined, Defined Color, Silver, Rim Width (External), 24, Rim Material, Alloy, Rim Width (Internal), 18.6, QBP Measured ERD (mm), 597,.