With a 27.5mm internal width, Gravitas rims increase tire volume and maximize the available grip on offer. Using an asymmetric design, you can equalize spoke tension and build a package that leaves descents in its wake, while cutting down weight where it isn’t needed for energy sapping climbs. To compensate for the differences in wall length and strength of an asymmetric design, the wall thicknesses have been proportioned to balance out impact forces equally. The Gravitas offers offset wheel benefits, without compromiseItem Specifications: Number of Holes, 32, Type, Tubeless, Size, 29", Manufacturer Spec ERD (mm), 597mm, Color, Silver, Model Name, Gravitas, Material, Aluminum, Brake Type, Disc, Width, 28mm, Wheel Depth, 20mm, Weight, 630g,.