Features: brand new and high quality ENHANCED BIKE BRAKE DISC - Increased strength by more than 30% at the edge reinforcement. Stainless steel brake disc reinforced material, great heat dissipation, dirt removal and drainage design, premium aluminum alloy material, stainless steel floating buckle. The international standard of hole spacing 44mm EXCELLENT DESIGN - CNC precision manufacturing, high hardness, unique heat dissipation design of the disc, high hardness,stamping molding,outer frame thickness of about 2mm. PREMIUM MATERIAL - Inner frame: aviation aluminum alloy, with excellent hardness, toughness, metal anodizing, superior corrosion resistance, reinforced angle design, with better tensile strength and shock absorption. Outer frame: Stainless steel material, hardness of 38-42, nice wear resistance, toughness, corrosion resistance, tensile resistance and not simple to deform SPECIFLCATIONS - 140MM 160MM 180MM 203MM (Every model of this bicycle brake disc is 2 pieces in a pack and 12 mounting screws), 1 piece weight: 86g of 140MM, 110g of 160MM, 146g of 180MM, 180g of 203MM. caution - (need to know the correct model you need before ordering so you get the right brake disc) SATISFACTORY SERVICE: If you have any questions, please contact us. We will do our best to serve you until you are satisfied. Specifications: Size: 140mm 160mm 180mm 203mm Color: Black, Blue,Red Note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 2x Bike Disc Brake Rotor.