Rotors are Surface Induction Hardened with 12-14% Chrome Content for Superior Wear Characteristics Precision Ground for Trueness Machine-Punched for Accurate Mounting Holes Drilled Full-Sweep Pattern Provides Superior Heat Dissipation and Consistent Wet or Dry Performance Counter Bored Mounting Holes uses Stock Hardware 240-802 or 240-800 Chrome-Plated Button Head Screw Sets if Needed (Two Sets Required for Dual Disc Applications) Satin Replaces 44136-84A