The ARC Offset rims utilize an asymmetrical design to optimize spoke tension balance, wheel durability and wheel stiffness. New 6069 Alloy provides a superior strength to weight ratio, significantly improving toughness.Offset nipple bed for improved spoke tension balance and wheel strength/stiffnessTubeless ready, strong tire retention beadItem SpecificationsBrake CompatibilityDisc OnlyBrake TrackNoneColorBlackDefined ColorBlackHub Drilling28ISO Diameter622 / Road / 29"Rim MaterialAlloyRim Width (Internal)25Tire TypeTubeless ReadyValvePrestaWheel Size29" RaceFace ARC Offset Rim Rims UPC: 821973335766