1979 trans am rear brake rotors 5 on 4 3/4 or 5 on 4 1/2 dual bolt circle

  
These have the dual bolt pattern for use on many after market brake changeovers. The rotors are drilled and slotted and zinc coated. What you see in the photo is what you will get. We welcome any and all questions. 5 on 4.5 and 5 on 4.75 bolt pattern. These are used on many rear disc brake conversion. 6.25 id were it slides over the axle.