Equip your semi to be Ready for the Road Ahead™, with the Meritor U-Shaped 10-Mounting Holes Air Disc Brake Rotor, a crucial element to offer smooth front and rear brake performance. Once the brake pedal is engaged, this replacement rotor works with the brake pads and caliper to create a compression mechanism that slows the vehicle. Fashioned with precision standards to remove imperfections and provide long-term reliability.