A 280mm oversized floating, patented Wave® rotor for optimum pad-to-rotor contact, special grooves to provide an active cooling system by allowing air to pass over every point of brake pad surface and a 7075-T6 aluminum center carrier and buttons to reduce weight. Every high-quality Galfer-patented Wave® rotor is made from a proprietary mix of virgin high carbon 420 stainless steel, laser cut (never stamped), double disc-parallel ground to assure perfect parallel flatness and heat treated to each specific application. KBA and TUV approved. Full instructions provided along with any technical help needed! Precision made in our Galfer factory in Spain.