The Traxda 1" rear block kit includes a pair of steel blocks, ubolts and hardware. All Traxda block kits are made in the USA with USA Mill Certified Steel. They are laser cut to precision tolerances using OEM drawings. Each block kit is welded using the latest US Made welders and triple checked to ensure a proper fit. Traxda uses plated u-bolts and hardware and powder coat every part in-house to ensure the finish lasts as long as your truck!