Rotor Storm HC, Ø 180 mm, 6 hole with 6 steel mounting screws (PU = 1 piece) rotor Storm HC 180 mm The Storm HC rotor is designed for Extreme use and Provides best braking performance even under large braking forces. e-bike ready hole pattern: 6 hole 6 steel mounting screws included compatible with: complete mt-family diameter: 180 mm weight: 140 g scope of delivery: 1 rotor incl. 6 steel mounting screws please use brake Pads, rotors and Royal blood. is only ensured if parts and accessories are used.