These longer than original shackles are sometimes needed for clearance or increasing caster. They are longer than originals by about 1.25"

They are made of 3/8" steel.

They come in two variations- 9/16 and 9/16 holes for oem springs or 9/16 and 5/8 holes for Super Duty leaves

Hardware is not included. You may need longer bolts for the upper pivot point