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 This product can be used with Model Part# Harley-Davidson All (2 in Center Hole) H-D#44136-92 84-99 FDRHD-1 Harley-Davidson XL 78-83 FDRHD-2 Harley-Davidson FX 77-83 FDRHD-2 Harley-Davidson FXWG 77-83 FDRHD-2 Harley-Davidson FXR 77-83 FDRHD-2