| Features: 1목3 Layers Nickel Plating: This bike flywheel is finely quenched, tempered and hardened, with 3 layer nickel plating, wear resistant and rust proof. 2목Accuracy Thread: The thread of the flywheel is clear and firm, the flywheel and the hub are closely connected, and the operation is smoother. 3목Strong Compatibility: High accuracy positioning of the tooth shape, fluent shifting, punching to reduce weight, and strong compatibility 4목Low Noise Operation: The flywheel rotates smoothly and without noise, ensuring tight connection with the bike hub and stable operation. 5목Product Style: It is a silver 7 speed threaded flywheel with 13, 15, 17, 19, 21, 24, 28 teeth, compatible with electric b… | |