2014-2016 Z51 Corvette two-piece slotted front brake rotors are proudly built and assembled in the USA. They feature Coleman Racing slotted rotors with black anodized 6061 T6 milled aluminum hats. Coleman Racing is synonymous with NASCAR, Desert Race Trucks and more. And our billet hats are CNC machined and then hard coated to provide a superior finish. The fasteners are NAS bolts and nuts, same as used in aircraft and spacecraft production. The end result is superior stopping power with a weight savings of 30+ pounds over factory rotors