WTB CZR i23 Rear Wheel - 700, 12 x 142mm, Center-Lock, Black, 28HCZR 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