This is our flush mount shackle hanger, this can be used to replace your thin factory hangers or great for a new build. The base is bent from 1/4" plate steel and is laser cut for a perfect fit to the 1/4" wall DOM sleeve and accepts a 9/16" Bolt. Also included is a high quality polyurethane bushing, made to last for years. This kit is sold as a pair. Like all of our products, they are made in the USA from USA steel.