These brackets are CNC cut & formed on a press brake to ensure precise fitment . - Made from 1/4" thick steel, these plates are stout! - Designed to be a weld on link mount. - Bolts size is 9/16", but can be drilled out to desired size - Designed to be used with any 2 5/8" wide control arm joint (Suspension bushings sold separately) - Brackets come fully welded as pictured