This C2/C3 Corvette rear axle half shaft features MW 4130 forged steel weld yokes, 1350 series non-greaseable, lubed for life universal joints. 3" O.D. x .083" heat-treated chromium-molybdenum tube with 13-7/8" centers. (Other lengths can be produced at the same cost.) Cold wire TIG welded. (Sold as a pair)