[Brakes and Rotors Kit Include]: 2 x Front drilled and slotted brake rotors-【55174】 + 4 x Front ceramic brake pads (hardware included)-【D1421-8536】. The diameter of this brake rotors is 【321mm(12.6in)】 [Brake Kits Compatible with Chevy]: Compatible with 2010-2017 Equinox - [2014-2016 Impala (New Body Style)] - 2017-2020 Impala - [2013-2015 Malibu (Vented Rear Discs)] - 2016 Malibu Limited (Vented Rear Discs)【Note： 321mm Front Rotor for 3.6L or 17 in wheels】 [Brake Kits Compatible with Buick]: Compatible with 2010-2016 Lacrosse (2011 & 2015 Models w/321mm Front Rotors or 17" Wheels; 2016: Brake Code J61) - [2011-2012 Regal (Vented Rear Discs (Will NOT Fit for Brembo Models))] - 2013 Regal (Base, Premium; 1 Piston Caliper; Vented Rear Discs (Will Not Fit for Brembo Models)) - [2014 Regal (Base, Premium; Vented Rear Discs (Will Not Fit for Brembo Models))] 【Note： 321mm Front Rotor for 3.6L or 17 in wheels】 [Brake Kits Compatible with Buick]: Compatible with 2015 Regal (Base; Vented Rear Discs (Will Not Fit for Brembo Models)) - [2016 Regal (Vented Rear Discs (Will Not Fit for Brembo Models))] - 2017 Regal (Models With Single Piston Front Calipers) - [2011 Saab 9-5 (W/ 321mm Diameter Rotor (w/ Performance Brakes))] 【Note： 321mm Front Rotor for 3.6L or 17 in wheels】 [Brake Kits Compatible with GMC]: Compatible with 2010-2017 Terrain【Note： 321mm Front Rotor for 3.6L or 17 in wheels】 【Exceptional Brake Kit Highlights】This brake kit features a rust-proof coating, asbestos-free high-carbon ceramic pads ensuring quiet braking, and a turbocharged heat dissipation design for enhanced performance. It has passed the 720-hour salt spray test and complies with US VOC regulations. With easy installation, it offers a reliable and smooth driving journey. Processed and manufactured according to professional O.E.M. Tested for impact, wear, and fatigue to help ensure quality and durability. Fits perfectly on your vehicle without any modifications.