Reserve carbon rims offer the perfect balance of width and wheel size. The rim beads on the Reserve rims are thick, the material saved by optimizing the placement of the spoke hole reinforcements went directly into the bead, making it extremely strong without adding weight to the overall construction. The beads are hookless: this makes for a better fit with modern tires, but also simplifies manufacturing, which results in more consistent carbon compaction the technical way to say stronger rim.Carbon fiber constructionIncludes rim tape and tubeless-ready valvesBacked by a lifetime warrantyItem SpecificationsBrake CompatibilityDisc OnlyBrake TrackNoneColorCarbonDefined ColorBlackHub Drilling28ISO Diameter622 / Road / 29"Manufacturer Spec ERD (mm)599MaterialCarbonRim Center Offset (mm)3.6Rim JointCarbonRim MaterialCarbonRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWeight449Wheel Size29" Reserve Wheels Carbon Rims Rims UPC: 192219397030