The Centric Parts Disc Brake Rotor with GCX Elemental Protection features a full coating of high carbon content material. This vented rotor style has a durable construction with a discard thickness of 20mm, offering reliable braking performance for your vehicle. The coated finish provides additional protection against corrosion, ensuring optimal functionality in various driving conditions. Additionally, it adheres to the California Prop 65 Warning standards, making it a safe and dependable choice for your braking needs.