Forged Transmission Slip Yoke Steel Aerospace Tolerances Quick Disconnect 28 Spline For Ford C-4/T5/Top Loader 3 And 4 Speed/Tremec Accepts 1350 U-Joint CNC Machined to Aero-Space TolerancesForged And Heat Treated For Maximum StrengthSeal Surface Specially Ground To Close ToleranceDesigned For Spicer 1350 UseQuick Disconnect Design.