VG SPORTS Stroller Scooter Bicycle Single Speed Flywheel, Style: 18T Black

1. High tensile strength steel, quenched and hardened, wear-resistant and rust-resistant precision positioning tooth pattern, high efficiency transmission 2. Chemical yellowing process, corrosion-resistant treatment, CNC precision heat treatment processing, enhance the hardness of the flywheel and durable 3. Softly rotating live flywheel, smooth and powerful operation, highly lubricated, easy to ride 4. High-precision machine polishing, clear threads, the flywheel and hub are tightly combined, the tighter you ride, the smoother it runs 5. Nickel-chromium plating: the surface is not easy to rust, smooth 6. Various specifications, convenient for you to choose freely 7. Specifications: 16-18-20-22-24T