CZR i23 gravel wheels are designed to minimize weight while blending stiffness and compliance to maximize power transfer and increase comfort. CZR i23 rims feature a 24mm section depth to maximize energy transfer, reduce weight, improve vertical compliance, and reduce rider fatigue while a hooked bead also improves tire retention with high pressure adventure road and gravel tires. CZR i23 Carbon Rim with 3mm of asymmetrical spoke offset and reinforced spoke beds, TCS Tubeless compatible Frequency Hub with top-tier EZO bearings 28hole, 3-cross lacing with Aerodynamic Wing bladed spokes and Sapim alloy nipples Swift 6-pawl freehub and 5 degrees of engagement Solid rim strip and TCS tape included Specifications Cassette Body TypeShimano Dynasys 11 Speed MountainCassette Body TypeShimano/SRAM 8, 9, 10 SpeedColorCarbonDefined ColorBlackHub/Brake CompatibilityCenter-Lock DiscISO Diameter622 / road / 29"Rear Axle12mm Thru x 142mmRim Width (Internal)23Tire TypeTubeless ReadyValvePrestaWheel Size700c