Brake Drum, Rear, Double Drilled Bolt Pattern, 5x130, 14mm Threads, 5x4.75, 12mm Threads
 
Porsche and chevy PCD, T1 68-79, Ghia 68-74 
Double Drilled for use with either Porsche 5x130 using M14-1.5 threads or Chevy 5x4.75 bolt pattern using 12mm threads