Bikers Choice Drilled Front or Rear Stainless Rotors for Harley Davidson 1973-1 - One Size Highest quality stainless steel Rotors are not polished Brake rotors are blanchard-ground with computer-punched heat dissipating holes to help disperse moisture and reduce weight These rustless rotors are compatible with all types of disc pads including sintered metal 2in. center, 3/8in. counter bore holes