Features1Hollow Design: The disc brake rotor features a large area of hollow design, significantly reducing its weight, increasing the area of air contact, and accelerating the dissipation of heat from the brake disc. 2Stable Performance: The 120mm bicycle disc brake can adapt to humid environments and is suitable for long distance and long term use. Its thickened design adds to its safety and stability. 3Easy Installation: The 120mm disc brake is easy to install on the disc brake frame and front forks. The brake disc is compatible with mountain bikes, road bikes, electric bikes, and more. 4Steel Material: The 120mm bicycle disc brake rotor is made of steel, which provides anti rust effects and high strength. It is not easy to deformed. 5Smooth and Reliable Operation: Use this 120mm disc brake to experience smooth and reliable braking performance on various terrains.SpecificationItem Type:BikeDiscBrakeRotorsMaterial: SteelWeight: 103g/3.6ozPackage List1 x DiscBrakeRotor