The OTR 430mm x 160mm U-Type Air Disc Brake Rotor, made with Expertise Built In , boasts attached ABS rings manufactured with non-corrosive metals and glazed with an anti-corrosion coating. This heavy duty air disc brake rotor has high carbon alloy that offers durability and better heat dissipation to get rid of brake fade and enhance the life of your brake pads. FleetPride is your First Click in Heavy Duty .