High Strength: Made of high-strength stainless steel, CNC turning, mirror polishing. 6 Supporting sides, stable and not easy to deform, good wear resistance, good toughness, corrosion resistance, tensile resistance, good hardness, metal anodization, shock absorption. Specifications: Outside diameter: 160mm/180mm. Center distance: 44mm. Disc thickness: about 1.8 mm. Method: standard 6-hole bolts installation. Please confirm the correct model you need before ordering so you get the right brake disc. Fashion Appearance: Our brake disc adopts qualified brake pad made of stainless steel. Colorful and gorgeous design, beautiful and cool. Stainless steel conveyor, polishing of good quality outside the rotor, which will make your bike look more beautiful. Hollow.