For 2006-2011 Buick, Cadillac Lucerne, DTS Front Rear eLine Slotted Brake Rotors Package Includes 4 Brake Rotors Disc Diamond Slotted To Increase Brake Pads Bite Diamond Slots Acts As A Rotor Wear Indicator 100 Percent Guaranteed Direct Fitment - No Modification Required Silver Zinc Plated To Provide Rust Protection On Hub And Vanes