As new built for 9 in Ford rears ,John’s Industries finned aluminum drums with cast iron liner—-11 inches across,steel liner is 3/8 thick.Have less than 1,000 miles, new are $995 from John’s Ind. Ad says uses 2 1/4 wide shoes—no prehistoric parts,modern components. Drilled for 2 bolt patterns—-4 1/2 on five(small Ford-mopar) 5 on 5(probably big Olds-Pontiac). $750 shipped CONUS or trade NICE flathead speed equip. No PayPal, NO TEXTS. Thx John in S. Texas 979-595-7324 cell.