Lifeline one piece stainless disc rotor 160mmthe lifeline one piece stainless disc rotor is manufactured from high strength stainless steel and at 160mm in diameter it is just the right size for use on cross country trails or urban riding featuring a double milled surface and machined vents on the braking surface it will give your brakes renewed and reliable braking performance resistant to warping and corrosion resistant it is built to last features material durable 410 high strength s