●【Material structure】 The thickness of the bicycle floating disc rotor is 2.0mm, and it is made of Stainless Steel+Aluminum alloy 7075 T6, which is wear-resistant and lightweight and will not add too much burden to the bicycle. ●【Multiple choice】 mountain bike rotor have 160mm 180mm 203mm three sizes to choose, black and red two colors to choose, you can choose at will according to your needs. ●【Excellent Performance】 The design of the floating system can reduce the deformation of the bicycle rotor at high temperatures and reduce the heat transfer to the center, thereby ensuring excellent. ●【Quick Heat Dissipation】Excellent wet and dry performance, good wear resistance, fast ventilation and good heat dissipation. The shape of the bicycle disc rotor can ensure good heat dissipation. ●【Easy installation】 Package Incude one brake disc and 6 hole bolts.It‘s easy to install on caliper.Just weight 0.2 pounds. Bringing you a wonderful cycling experience.