Premium Drilled and Slotted Vented Front and Rear Brake Rotor Set (7004-31039) by Dynamic Friction Company®. Quantity: 4 Per Pack. Premium G3000/G11H18 Iron Castings for Strength, Stability, and Durability. Each rotor passes a 100% electronic inspection station that measures over 20 attributes to ensure that each rotor meets OE specifications.