Hello,
   Another frequently asked question is, "Which direction do the slots on my rotors face?".  We machine different drill/slot patterns on our rotors for uniformity from the left side to right side of the vehicle.  The easiest way to describe it is if the rotor is mounted correctly on your vehicle, the top-most slot will point up and toward the back of the vehicle.  Below is a picture to illustrate the difference in machining between the right (passenger) side and the left (driver) side rotors.