Prepare your grill for direct cooking over high heat. While your grill is preheating, lightly brush both sides of the steaks with olive oil. Sprinkle with kosher salt and pepper. To make cross-hatch marks on you steaks, lay them at an angle across the cooking grate. Close the lid, and grill the first side for about 2 minutes. Open the lid and rotate each steak at the opposite angle, on the same side. Close the lid and cook for 2 minutes more. Flip the steaks over, and cook 2-4 minutes for medium rare steaks.Remove the steaks from the grill and let them rest for 3-4 minutes before cutting them into thin slices.