SHIMANO brand sports products are designed to allow you to enjoy your favourite sport without having to worry about anything other than doing the best SM-RT30 with Ling & Magnet Hard material, multi-coloured. SHIMANO Hard material made with premium materials that adapt to any sports activity Rotor Discs 203mm Center Lock Int. Multicoloured.Hard material made from high-quality materials that adapt to any sporting activity.Rotor Discs 203mm Center Lock Int. Multi-coloured