Front Driveshaft 1977-80 Blazer with Auto Trans. 27 1/4" Collapsed, measured from centerline of u-joint located at the slip yoke end to the centerline of the rear (furthest u-joint) on the opposite end of the prop shaft. Prop shaft must be collapsed! All shaft assemblies are remanufactured, not rebuilt, to ensure a long an trouble free service life. All shaft assemblies are completely disassembled, cleaned, and inspected. Only those components that meet the original OEM specifications are reused. All other components are replaced with new or OEM specific remanufactured components. All shafts are re-assembled with new universal joints and CV centering kits with grease fittings and are then completely greased with the proper lubricant. Remember, grease is the life of the shaft! All shafts are straightened, computer balanced, tested to closer tolerances than OEM specifications, and then 100% inspected after final assembly and balancing.