Proterra Light i25 wheels are for all you gravel riders out there. Proterra Light i25 wheels feature an open-cavity profile to minimize weight and maximize efficiency as you get lost out where the pavement ends. Like all other Proterra wheels, the responsive 6-pawl freehub offers 5 degrees of reliable engagement whether you're crushing a gravel ride or have your frame bag bursting at the seams for an overnight adventure.Frequency Hub with top-tier EZO bearings25mm TCS Tubeless compatible rims with 3-cross lacing and alloy nipples, hand-built in CaliforniaSwift 6-pawl freehub and 5 degrees of engagementSolid rim strip and TCS tape includedItem SpecificationsCassette Body TypeShimano HGCassette Body TypeShimano HG 11/12-Speed RoadColorBlackDefined ColorBlackHub/Brake CompatibilityCenter-Lock DiscISO Diameter622 / Road / 29"Rear Axle12mm Thru x 142mmRim MaterialAlloyRim Width (Internal)25Tire TypeTubeless ReadyValvePrestaWheel Size700c WTB Proterra Light i25 Rear Wheel Rear Wheel UPC: 714401453012