French mouth (6.5mm) carbon fiber rim. [Number of holes] 24 holes in the front of the disc brake, 24 holes in the rear. [Size] 38mm 50mm frame height, rim outer width25mm inner width 19mm. [Tire] Support 23C 25C 28C 32C 38C.[Tower base] Strengthen the six-ratchet aluminum tower base, support 8-9-10-11 speed. Taiwan Xinda straight flat spokes. [Weight] 1810 grams (weight does not include tire pads and quick release). [Outer box size] 74cm 17cm 65cm. [List] One pair of quick release + high pressure tire pad + one gasket.