AutoShack Rear Brake Rotors & Calipers for Chevrolet, Silverado 1500 2007-2018 – E-Coated Drilled & Slotted – Black Finish – NightGuard – 13.57″ (344.8 mm), 6-Lug. Distributed by AutoShack. ISO / IATF 16949 certified for quality and safety.