Engineered Machined Finished,Coated In ISO Certified Facilities In North America,Salt Spray Tested Per ISO-9227 Exceeding The 240 hrs. Requirement,Maintain A Clean Pad Surface And Expel Away Debris,Validated Design And Performance Through Extensive Testing,Precision Milled Slots,Proven Cross Drilled Designs To Optimize Thermal Efficiency,Magniâ„¢ Coating Barrier Applied,Significantly Reduce Harmonic Resonance Issues,Heat Dissipation/Strength And Improve Wet Braking,All Rotors Are Balanced w/CNC Programmed,G3000 Metallurgy Superior Automotive Casting Material