Suspension Leaf Spring Axle U Bolt Kit U Bolt Kit Assembly Dim (A) 7 8, Dim (B) 3 1 16, Dim (C) 15 1 2 price list default and 389 models (2007 and Color:Cadmium Orange and 389 models (2007 and newer) this heavy duty unit automatically maintains brake adjustment to help reduce brake wear and improve vehicle safety Thread Diameter 7 8 14 in Reliable hardware the components in this leaf spring axle U bolt kit are designed to securely hold the leaf spring or leaf spring bundle to the underside of a vehicle or trailer axleCheck fit carefully review the dimensions of the leaf springs that will be used and other relevant application details to select the right type and size U bolt kit for your needsDurable construction the components in this kit are engineered from quality materials for reliable performance and long service lifeTrustworthy quality backed by a team of product experts in the United States and more than a century of automotive experience