Weight And Vane Count Match Original Equipment Design,Sold As A Pair,Zinc Plated For Protection Against Corrosion,Manufactured To Strict Tolerances For DTV And Runout For Smooth Quiet Performance,Chamfered Drill Holes And Rounded Slots To Minimize Stress Cracking,Precision Cross-Drilled For Maximum Cooling And Optimum Performance,Bolt-On Upgrade For Stock Brakes; No Modifications Necessary,Slotted Friction Surface Sweeps Away Gasses/Dust/Water,100 Percent Dynamic Mill Balanced