Shackle has a 7/16" hole at top and a 9/16" at bottom with 5.25" distance separating the holes. Sold in a set of 4 shackles. Provides 1/2" lift.

http://copperheadfab.com/images/products/Frontpic.jpg

http://copperheadfab.com/index.php?action=catview&cat=Shackles