Signswise DR09 Floating Rotor Brake Disc Stainless Mountain Bike Disc Brake Rotor 6 Bolts 100% brand new and high quality; Quick disassembling. Easy to install. For Bike Type: Cyclocross Bike, Road Bike, Mountain Bike Efficient Cooling Holes; 6 bolts are included Material: 410 stainless braking band + 7075 alloy carrier FREE SHIPPING from China via ePacket, usually takes about 10-15 business days for the delivery