Model: Straight pull XC3 406/451 Specifications: 100/135 open file (pure disc) Ratchet times: 30 times / circle Inner tube hole: use beautiful mouth tube Flower Drum: Straight pull flower drum, Japanese Palin, the first 2 after 5 Palin, CNC fine polishing process, AL7075 high-strength ultra-light tower base, surface hard oxidation treatment, Support 8/9/10 speed flywheel Spokes: 24 holes before and after Weight: 20 inches: 1385g 451:1495g Rims: High-strength double-layer reinforced rims, pure discs, plus stainless steel pudding, increase the toughness of the rim, and mill the three-sided CNC fine polishing process, which is more beautiful and atmospheric. Compatible with the range of 1.0~2.1 width Package included:1 pair *wheelset Comes with: 1. Exquisite standard quick release set, 2. Original spare spokes, 3. Gaorun base oil