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 Chrome-Plated Button Head Screw Sets 240-802 or 240-800, if Needed (Two Sets Required for Dual Disc Applications) Replaces OEM 44136-84A