Outdoor Manager-2pcs MTB Mountain Road Bike Bicycle Disc Brake Rotor 180mm AVID Stainless With 12 bolts Color Silver Size:180mm (7"),comes with 12 bolts Compatible:IS Standard 6 bolt pattern,Material:Stainless Steel Color:silver suitable for mtb road bike Package:2 pcs disc brake rotor 180mm with 12 bolts